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Type IV NPM slide marking |
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W5USMC 
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Joined: Apr 29 2017 Location: Missouri Status: Offline Points: 2958 |
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 Topic: Type IV NPM slide markingPosted: Mar 03 2018 at 2:30pm |
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I recently purchased a NPM slide, it is marked N 15 but also has the letter H stamped under the 15, is this possibly an inspector mark? My picture taking skills are not great but you can see the top portion of the H.
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Wayne
USMC Retired NRA Life Member |
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W5USMC
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Posted: Mar 08 2018 at 8:38pm |
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Still looking to get some thoughts on this partial H stamped on this slide. Inspector mark???
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Wayne
USMC Retired NRA Life Member |
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New2brass
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Dan Pinto, Photo Editor Joined: Nov 29 2015 Location: CT Status: Offline Points: 4656 |
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Posted: Mar 08 2018 at 10:05pm |
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Hmmm, it looks like a U to me.
will check what i have |
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W5USMC
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Posted: Mar 09 2018 at 9:04am |
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Dan,
Here is a different picture, I can only get the vertical lines to show up in the picture, the horizontal line is very light and I can only see it under a magnifying glass w/light. 
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Wayne
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New2brass
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Dan Pinto, Photo Editor Joined: Nov 29 2015 Location: CT Status: Offline Points: 4656 |
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Posted: Mar 09 2018 at 10:02pm |
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I found three N 15 slides. One Is N/15 in line with barrel. Other two are perpendicular like Wayne's. It appears spacing of the 1 and 5 are consistent suggesting the 15 was one stamp and the N another. I had one N13 and there was no consistency suggesting it was done with three separate stamps. Looking at several other N8(9) slides I found none had inspector or any other marks. The slide Wayne shows the H or whatever it is does not match the spacing of the 15 so not a double stamp in my opinion. If 13 was two stamps and considering how parallel the lines are I would not think it an 11, nor do I have a N11 to compare it to. There are also UN slides but font and size are off and made by someone else (US&S?) so that rules them out as they had different numbers As to the line making it an H. Was it in middle or more to bottom. Take a good look at curve to side wall for matching marks. Could it have been one that was earlier and re-stamped? Do some have inspector marks? I do not know. Maybe others can take the time and check what they have. |
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W5USMC
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Posted: Mar 10 2018 at 12:36pm |
Dan, the line that I think makes it an H is more to the bottom. The more I look at it with different lighting maybe it is an 11 with a scratch in the metal making it appear to be an H.  
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Wayne
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New2brass wrote: