Here is my one and only, 1962 554 A/B. Soft rubber (original?) handset cord and 172C backplate. Needs a polish, and a better picture. :)
(http://nate.twedten.com/we554.jpg)
I almost bought a black 500 with metal dial (not a fan of the plastic dials at all) tonight on ePay, but I passed it because I don't have a phone jack in my office, and it looked a little rough.
I like that wall phone--I would like one of those--it really brings back the memories.