Is there a list of numbers found on 1941 thermoplastic housings? Are these serial numbers or lot numbers or what?
Here is one dated 10 17 41: 20868
http://www.classicrotaryphones.com/forum/index.php?topic=330.0
shows one dated 81441: 26868
I had one, it was in this thread about shrinking thermplastic.
http://www.classicrotaryphones.com/forum/index.php?topic=6211.0
These were 1941 thermoplastic trials that WE did while still making metal 302s. The one I had was date 7/31/41. They are quite cool but usually cracked or severely shrunken...Doug
I'm pretty sure my 460 has a serial number like that. I'll take a look tomorrow and if it does, I'll take a picture.
Are these "Bell System" phones or ones issued outside the Bell System, maybe military?
The 10/41 set has a Bell System handset. Large numbers for date and other number are now white and on the inside bottom edge of this housing.
6 26 41 21850
I made a list at one time of my observations of these numbers on ebay phones, from those here in the forum, or where ever...
I have one 1941 plastic housing too, late, like 11/41 or so, and by then it appears to me, these numbers were much smaller.
I sorted the numbers I had by dates on the housing or base, but the correlation was not consistent, IIRC. I will try to find that data....
I don't see any correlation either:
6 26 41 21850
7 31 41 21790
8 14 41 26868
10 17 41 20868
The date and serial on this housing is: 10 29 41 24327
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Ivory housing with 4 digits:
5 20 41 4193
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Quote from: poplar1 on May 25, 2014, 10:08:14 PM
I don't see any correlation either:
6 26 41 21850
7 31 41 21790
8 14 41 26868
10 17 41 20868
Experimenting with alternate materials, preparing for a possible world conflict ?
I have always been under the impression, that the United States knew the attack on Pearl Harbor was coming ? If that material is Nitrocellulose, isn't that critical in Bomb making, the excess shrinkage, and cracking sounds like Nitrocellulose ?
D/P
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You are about 75 years behind of my post. Bomb as in dropped from an airplane, not CAR BOMB.
D/P
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The only way they could be serial numbers is if they started with 99999 and worked backwards to 00001. This would be unlikely. Possible, but unlikely.
9 9 41 is September 9 1941,,,,the other numbers are unknown. I had a July 31 41. This was WE first attempt at thermoplastic.....Doug