The Carbine Collectors Club

Click on the image above to learn more about the M1 Carbine


Forum Home Forum Home > The Club > General Discussion > Parts Markings
  New Posts New Posts
  FAQ FAQ  Forum Search   Register Register  Login Login


3 in Circle IP Receiver Marking ?

 Post Reply Post Reply Page  123>
Author
Message Reverse Sort Order
stevehowa View Drop Down
Recruit
Recruit
Avatar

Joined: May 06 2022
Location: Utah
Status: Offline
Points: 9
Post Options Post Options   Thanks (0) Thanks(0)   Quote stevehowa Quote  Post ReplyReply Direct Link To This Post Topic: 3 in Circle IP Receiver Marking ?
    Posted: May 14 2022 at 8:41pm
Thank you for having a look.  I have been searching for a similar mark without success.   
Back to Top
New2brass View Drop Down
Moderator Group
Moderator Group
Avatar
Dan Pinto, Photo Editor

Joined: Nov 29 2015
Location: CT
Status: Offline
Points: 4006
Post Options Post Options   Thanks (0) Thanks(0)   Quote New2brass Quote  Post ReplyReply Direct Link To This Post Posted: May 14 2022 at 6:11pm
Thank you Steve, That is a new one for me!
Back to Top
stevehowa View Drop Down
Recruit
Recruit
Avatar

Joined: May 06 2022
Location: Utah
Status: Offline
Points: 9
Post Options Post Options   Thanks (1) Thanks(1)   Quote stevehowa Quote  Post ReplyReply Direct Link To This Post Posted: May 13 2022 at 7:40am
Back to Top
New2brass View Drop Down
Moderator Group
Moderator Group
Avatar
Dan Pinto, Photo Editor

Joined: Nov 29 2015
Location: CT
Status: Offline
Points: 4006
Post Options Post Options   Thanks (0) Thanks(0)   Quote New2brass Quote  Post ReplyReply Direct Link To This Post Posted: May 13 2022 at 7:17am
Originally posted by stevehowa stevehowa wrote:

  Also have a T stamped next to US 30 Carbine that seems out of place. 


Can you post a pic?
Back to Top
stevehowa View Drop Down
Recruit
Recruit
Avatar

Joined: May 06 2022
Location: Utah
Status: Offline
Points: 9
Post Options Post Options   Thanks (1) Thanks(1)   Quote stevehowa Quote  Post ReplyReply Direct Link To This Post Posted: May 13 2022 at 12:28am
3 in circle IP Receiver Marking.  Also have a T stamped next to US 30 Carbine that seems out of place.  
Back to Top
W5USMC View Drop Down
Moderator Group
Moderator Group
Avatar

Joined: Apr 29 2017
Location: Missouri
Status: Offline
Points: 2489
Post Options Post Options   Thanks (0) Thanks(0)   Quote W5USMC Quote  Post ReplyReply Direct Link To This Post Posted: May 08 2022 at 5:08pm
Another Circled 3, on GB now from RTI.
Wayne
USMC Retired
NRA Life Member
Back to Top
New2brass View Drop Down
Moderator Group
Moderator Group
Avatar
Dan Pinto, Photo Editor

Joined: Nov 29 2015
Location: CT
Status: Offline
Points: 4006
Post Options Post Options   Thanks (1) Thanks(1)   Quote New2brass Quote  Post ReplyReply Direct Link To This Post Posted: Apr 14 2021 at 11:20am
You had asked about the finish.

Parkerizing is a phosphate finish. There were many companies with different formulas or process.
Phosphate finishes had a wide variety of shades that range from a silvery gray to black.

We see some Bavarian returns that have been blued, others phosphate finished.
The Italian returns were a black phosphate. I do not know if all were.

With the mysterious 3 in circle marking we see different finishes. If you look at the Inland above your picture it appears to be an original black oxide finish, which is something Inland did early on before switching to a phosphate coating.
The we see some gray phosphate carbines with the 3 in circle.

It could be that whatever agency had them did the refinishing or it could have been an importer or even a subsequent owner.

Back to Top
35 Whelen View Drop Down
On Point
On Point
Avatar

Joined: Jul 11 2020
Location: Texas
Status: Offline
Points: 141
Post Options Post Options   Thanks (0) Thanks(0)   Quote 35 Whelen Quote  Post ReplyReply Direct Link To This Post Posted: Apr 14 2021 at 10:11am

I'll add my Circle 3 here, maybe it will help...?




  I didn't see any other unusual markings, scuffs or scrubs on the reveiver.
Back to Top
W5USMC View Drop Down
Moderator Group
Moderator Group
Avatar

Joined: Apr 29 2017
Location: Missouri
Status: Offline
Points: 2489
Post Options Post Options   Thanks (0) Thanks(0)   Quote W5USMC Quote  Post ReplyReply Direct Link To This Post Posted: Nov 02 2020 at 12:31pm
Here is another one from RTI's website.

Wayne
USMC Retired
NRA Life Member
Back to Top
GotSnlB28 View Drop Down
Grunt
Grunt
Avatar

Joined: Jan 01 2016
Location: WI
Status: Offline
Points: 748
Post Options Post Options   Thanks (0) Thanks(0)   Quote GotSnlB28 Quote  Post ReplyReply Direct Link To This Post Posted: Sep 28 2020 at 10:53pm
Yup, case hardening wasn't the right term to use. Metallurgist I'm not :) Just seemed like a deep punch mark for a hardened receiver. But as you say, receivers can wear in this area so it's probably not that hard.
Back to Top
03manV View Drop Down
On Point
On Point
Avatar

Joined: Mar 01 2020
Location: near Charlotte
Status: Offline
Points: 260
Post Options Post Options   Thanks (0) Thanks(0)   Quote 03manV Quote  Post ReplyReply Direct Link To This Post Posted: Sep 28 2020 at 10:29pm
Originally posted by GotSnlB28 GotSnlB28 wrote:

Dan, that's an interesting thought but the punch may not raise the metal enough to make a difference? It may have been an unsuccessful attempt to fix a slide problem too. Another thought I had, the front punch mark appears deep considering case hardening?

I agree that the punch would not make much difference in the slide "dismounting", and actually it would
move the tab the wrong way, IMO.

But a carbine receiver is not case hardened, which is a surface hardening only.
I believe they were differentially heat treated and the "middle" area may be softer than the front and rear, given the wear and upset frequently seen in the slide catch slot- it is not particularly hard in that area.
Don
Back to Top
GotSnlB28 View Drop Down
Grunt
Grunt
Avatar

Joined: Jan 01 2016
Location: WI
Status: Offline
Points: 748
Post Options Post Options   Thanks (0) Thanks(0)   Quote GotSnlB28 Quote  Post ReplyReply Direct Link To This Post Posted: Sep 28 2020 at 6:08pm
Dan, that's an interesting thought but the punch may not raise the metal enough to make a difference? It may have been an unsuccessful attempt to fix a slide problem too. Another thought I had, the front punch mark appears deep considering case hardening?
Back to Top
New2brass View Drop Down
Moderator Group
Moderator Group
Avatar
Dan Pinto, Photo Editor

Joined: Nov 29 2015
Location: CT
Status: Offline
Points: 4006
Post Options Post Options   Thanks (1) Thanks(1)   Quote New2brass Quote  Post ReplyReply Direct Link To This Post Posted: Sep 28 2020 at 2:53pm
noticed how the metal is raised around the punch mark with no finish left.
I am thinking this was an attempt to rise the slide tab and to keep a slide from dismounting while firing?
Back to Top
GotSnlB28 View Drop Down
Grunt
Grunt
Avatar

Joined: Jan 01 2016
Location: WI
Status: Offline
Points: 748
Post Options Post Options   Thanks (1) Thanks(1)   Quote GotSnlB28 Quote  Post ReplyReply Direct Link To This Post Posted: Sep 28 2020 at 1:53pm
I'm sure they are RTI given the import mark. Have been seeing a few of those being flipped on GB given the rising prices.

It looks like punch marks at either end of the slide stop recess to me as well. I was wondering if that mod was made in factory or later? It is an earlier receiver. I have not seen one like this before.
Back to Top
03manV View Drop Down
On Point
On Point
Avatar

Joined: Mar 01 2020
Location: near Charlotte
Status: Offline
Points: 260
Post Options Post Options   Thanks (1) Thanks(1)   Quote 03manV Quote  Post ReplyReply Direct Link To This Post Posted: Sep 28 2020 at 12:07am
I would say they are carbines sold by RTI.

What looks like a stop pin "hold", is a puch mark to straighten/reform the front edge of the cut out so
it will hold the pin in the slide and thus hold the slide back. At least that is what it looks like to me. ;)
Don
Back to Top
painter777 View Drop Down
Hard Corps
Hard Corps
Avatar

Joined: Feb 18 2016
Location: Central MI
Status: Offline
Points: 1505
Post Options Post Options   Thanks (0) Thanks(0)   Quote painter777 Quote  Post ReplyReply Direct Link To This Post Posted: Sep 27 2020 at 8:18pm
Originally posted by GotSnlB28 GotSnlB28 wrote:

Saw this one on GB auction #879513085 RO today.
Appears to be a circle 3, though the top part isn't very clear, so maybe it's not. Interesting thing is it's marked with the IOINC / RTI import mark so I'm assuming from Ethiopia? Plum toned trigger housing.




@ GotSnlB28,
I  just seen this one on GB and was searching around because I thought it was a Circled S.
I also couldn't make out the Import mark.
Seller has 3 carbines listed IMO all are priced pretty high. 
This Rock and 2 Springtube Wra's, a 35,897 and a 34,492.
The Rock Ola and WRA 35,897 both show that Import mark. No pictures of Import marks on WRA 34,492..... But I assume it has the same Import stamp.
All in the same condition..... Rough.

Are these the RTI Carbines ??
When looking at the Rock Ola, Do you think the Drilled Hole in front of the Slide stop is a 'New Stop Pin Hold' ?

Thx
Ch-P777

Living Free because of those that serve.....
Back to Top
sleeplessnashadow View Drop Down
Admin Group
Admin Group


Joined: Nov 09 2015
Location: SoCal
Status: Offline
Points: 970
Post Options Post Options   Thanks (1) Thanks(1)   Quote sleeplessnashadow Quote  Post ReplyReply Direct Link To This Post Posted: Sep 22 2020 at 12:18am
I've seen a sufficient number of these now that I don't think they were provided to the police forces of Germany or Austria during the American Occupation. Or anytime after in Austria.

Those with the Century Arms import marking, IF they were among those imported by Century Arms in the mid 1970's that included many carbines used by the German police, we don't know who Century Arms bought those from. A longtime member of the Carbine Club was an MP stationed in Germany in the 1970's. He visited a number of firearm import/export companies in several European countries during his time there.

Two of the companies were in Switzerland, where he saw hundreds of U.S. carbines obtained from various countries being readied for export from Switzerland. These included carbines used by the German police. Century Arms may have bought the carbines they imported in the mid 1970's from one of these companies or another like them.

Jim
Back to Top
GotSnlB28 View Drop Down
Grunt
Grunt
Avatar

Joined: Jan 01 2016
Location: WI
Status: Offline
Points: 748
Post Options Post Options   Thanks (2) Thanks(2)   Quote GotSnlB28 Quote  Post ReplyReply Direct Link To This Post Posted: Sep 21 2020 at 11:51pm
Saw this one on GB auction #879513085 RO today.
Appears to be a circle 3, though the top part isn't very clear, so maybe it's not. Interesting thing is it's marked with the IOINC / RTI import mark so I'm assuming from Ethiopia? Plum toned trigger housing.



Back to Top
Bigheavy31 View Drop Down
On Point
On Point


Joined: Aug 24 2020
Location: Asheville NC
Status: Offline
Points: 127
Post Options Post Options   Thanks (1) Thanks(1)   Quote Bigheavy31 Quote  Post ReplyReply Direct Link To This Post Posted: Sep 21 2020 at 9:02am
I looked for markings in both of these areas- but didn’t see anything in either area. 
Back to Top
sleeplessnashadow View Drop Down
Admin Group
Admin Group


Joined: Nov 09 2015
Location: SoCal
Status: Offline
Points: 970
Post Options Post Options   Thanks (0) Thanks(0)   Quote sleeplessnashadow Quote  Post ReplyReply Direct Link To This Post Posted: Sep 21 2020 at 12:45am
Are there any lengthwise marks along the top of the receiver to the left of the bolt?



Any evidence of markings having been removed from the bottom of the trigger guard?

Thanks for sharing the great pic.

Jim
Back to Top
 Post Reply Post Reply Page  123>

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 12.01
Copyright ©2001-2018 Web Wiz Ltd.

This page was generated in 0.063 seconds.