What does the "S" mean in this date

[Doug Rose]

I am selling this phone on eBay and have sold a few before with the S before the date. I just received a question about the S. What does it mean?...thanks...Doug

http://www.ebay.com/itm/300862766589

[Gilas]

I have gotten a couple of those as well and they are all either 45 or 46.  Hold it up to the light and see if you can see purple.  The two that I had you could and did not look like the other ones when held up.  The others were solid black while the "S" ones had that indigo tint to them.

[AE_Collector]

http://www.classicrotaryphones.com/forum/index.php?topic=7736.0

http://www.classicrotaryphones.com/forum/index.php?topic=2572.0

[K1WI]

Doug ,
  When I was a kid ( a while back) I had an Aunt and Uncle that lived in Bellville NJ . My uncle made molds for plastic products. He was a part time employee for BOTH Western Electric and Lionel Electric Trains. I have a 302 that he made on my birthday in 1946 it has the "S" prefix . I do not not know if it is factual or if I'm correct , but I always assumed it was an indicator of where the factory he worked in was located.....Succasunna , NJ.
   Maybe there is someone out there that knows the facts.  By the way the 302 he made for me , which I still have , it's a very golden ivory color ...it was made that way not aged .
   Sorry I can't ask My uncle as he is long gone.

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      Good luck  . nice phone
             ANDY F   K1WI

   PS    I do know that Succasunna had a long time involvement with the Bell Sytem  ESS SERIAL #1 was in Succassauna.  This might have been a temporary production line as until 1947 WE plants were only in Hawthorne ,Kearny ,and Baltimore.