Author Topic: Serial number on early plastic 302 housings  (Read 3799 times)

Offline poplar1

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Serial number on early plastic 302 housings
« on: December 21, 2012, 03:39:22 PM »
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
"C'est pas une restauration, c'est une rénovation."--François Martin.

Offline Doug Rose

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Re: Serial number on early plastic 302 housings
« Reply #1 on: December 21, 2012, 09:29:51 PM »
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
Kidphone

Offline ESalter

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Re: Serial number on early plastic 302 housings
« Reply #2 on: December 21, 2012, 10:17:15 PM »
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. 

Offline Phonesrfun

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Re: Serial number on early plastic 302 housings
« Reply #3 on: December 21, 2012, 10:55:43 PM »
Are these "Bell System" phones or ones issued outside the Bell System, maybe military?
-Bill G

Offline poplar1

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Re: Serial number on early plastic 302 housings
« Reply #4 on: December 22, 2012, 08:35:15 AM »
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.
"C'est pas une restauration, c'est une rénovation."--François Martin.

Offline poplar1

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Re: Serial number on early plastic 302 housings
« Reply #5 on: May 25, 2014, 09:54:06 PM »
6 26 41       21850
"C'est pas une restauration, c'est une rénovation."--François Martin.

unbeldi

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Re: Serial number on early plastic 302 housings
« Reply #6 on: May 25, 2014, 10:05:14 PM »
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....


Offline poplar1

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Re: Serial number on early plastic 302 housings
« Reply #7 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
"C'est pas une restauration, c'est une rénovation."--François Martin.

unbeldi

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Re: Serial number on early plastic 302 housings
« Reply #8 on: May 25, 2014, 10:15:47 PM »
The date and serial on this housing is:  10 29 41 24327
« Last Edit: September 16, 2017, 05:11:45 PM by unbeldi »

unbeldi

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Re: Serial number on early plastic 302 housings
« Reply #9 on: May 29, 2014, 12:17:59 PM »
.
« Last Edit: September 16, 2017, 05:12:15 PM by unbeldi »

Offline poplar1

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Re: Serial number on early plastic 302 housings
« Reply #10 on: May 29, 2014, 01:36:13 PM »
Ivory housing with 4 digits:
5 20 41   4193
"C'est pas une restauration, c'est une rénovation."--François Martin.

unbeldi

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Re: Serial number on early plastic 302 housings
« Reply #11 on: May 29, 2014, 01:47:36 PM »
.
« Last Edit: September 16, 2017, 05:12:34 PM by unbeldi »

unbeldi

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Re: Serial number on early plastic 302 housings
« Reply #12 on: August 03, 2014, 05:02:45 PM »
.
« Last Edit: September 16, 2017, 05:13:03 PM by unbeldi »

unbeldi

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Re: Serial number on early plastic 302 housings
« Reply #13 on: April 23, 2015, 10:04:31 PM »
.
« Last Edit: September 16, 2017, 05:13:20 PM by unbeldi »

Offline Dan/Panther

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Re: Serial number on early plastic 302 housings
« Reply #14 on: April 24, 2015, 12:24:21 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

« Last Edit: April 24, 2015, 12:28:24 PM by Dan/Panther »

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