A small yellow phone just sold on eBay. Auction # 301761270887. It was posted on Facebook. I have no pictures to post but it looks like nothing I have ever seen and is marked Bell Labs on the bottom. Any ideas or opinions??
Auction pictures---sold for $102.50:
http://www.ebay.com/itm/Retro-60s-YELLOW-Mini-Desk-Phone-Western-Electric-Telephone-Vintage-Study-Lab-/301761270887
That phone looks like it could have had any name imprinted on its touchpad, depending on who the importers sold them to for retail.
I think they were part of the Western Electric Touch-a-Matic series.
Here is another example of the same model, also yellow, serial #2562.
http://www.classicrotaryphones.com/forum/index.php?topic=9085.msg97280#msg97280
Here's another version from about the same time period: It's like the rust color TAM in the above topic.
http://www.classicrotaryphones.com/forum/index.php?topic=2346.msg31192#msg31192