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IR Scopes - Hi/Low Serial Numbers to Date-Feb 2020

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sleeplessnashadow View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote sleeplessnashadow Quote  Post ReplyReply Direct Link To This Post Topic: IR Scopes - Hi/Low Serial Numbers to Date-Feb 2020
    Posted: Nov 02 2017 at 3:51pm
The following is a summary of the serial numbers we have collected to date. These serial numbers have been confirmed thru photographs and/or communication.

We have info on several dozen scopes that have had the name plates removed and several dozen scopes the photos do not show the serial number clearly.

Please help us build on this information as original documents providing exact quantities manufactured have so far been elusive. Instructions on how to help are posted in the Announcement regarding this research project at the top of this thread.



Latest Update: October 2020

T120/M1 Scopes
Assigned Serial Number Block: 1 & up

Electronic Labs - E.B.P.O. No. W-44-009-ENG-105
     Lowest: 1743
     Highest: 2078

T120/M1 Power Supplies

Electronic Labs - E.B.P.O. No. W-44-009-ENG-105

          Lowest: 1701
          Highest: 3295

          Lowest: 5153
          Highest: 5967

Model M2 Scope (Early)
Assigned Serial Number Block: 5001 & up

Bell & Howell
Electronic Labs

1st Contract - W-44-009-ENG-230 & W-44-009-ENG-235
     Lowest: 5391
     Highest: 5797

2nd Contract - W-30-082-ENG(MSP)4358 & W-30-082-ENG(MSP)4326
     Lowest: 5868
     Highest: 6691

Model M2 Scope (Late)
Assigned Serial Number Block: M2-001-50 - M2-1700-50

Bell & Howell - P.O. 88-B-18900-88
Cornell-Dubilier Electric - P.O. 88-B-18889-91
     Lowest: M2-301-50
     Highest: M2-1692-50

Model M3 Scope

American Optical

1st Contract - P.O. No. 88-B-18762-94 Date: 8-31-50

          Lowest: M3.11.50
          Highest: M3.1612.50

          Lowest: M3.1791.50
          Highest: M3.5914.50

2nd Contract - P.O. No. 27-43200-03 Date: 6-23-51
     Lowest: M3.6090.51
     Highest: M3.10458.51

3rd Contract - P.O. No. 27-55902-03 Date: 6-30-53
     no serial numbers (3 examples so far)

Capehart-Farnsworth - P.O. No. 27-43201-11 Date: 6-22-51
     Lowest: 22
     Highest: 4100

Oak Mfg Power Packs

1st Contract - P.O. No. DA-11-184-ENG-6148 Date: April 1951
     Lowest: 11
     Highest: 5396

2nd Contract - P.O. No. DA-11-184-ENG-6529 Date: July 1951
     Lowest: 6183
     Highest: 15591

3rd Contract - P.O. No. 27-654-MAP-07 Date: February 1952
     Lowest: 16205
     Highest: 16296


Yes, we're still researching these and will be for a year or more. Web pages are under construction.

Edited by sleeplessnashadow - Oct 10 2020 at 5:08pm
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