Westrn Electric 333B

[Phonegal]

Hi y'all. The other day I acquired a Western Electric 333B via a local auction. It seems to be intact and in reasonably good condition (pictures will follow). I'm assuming that the time period follows WE 302's but that's just the guess of a novice. I would appreciate any information about this unit both historical and practical as to renovation & hook-up's as there seems to be little info available online. For the record, I paid $55. Thank you!

[Phonesrfun]

The 333B is a metal wall phone that is probably circa 1920's, so it is earlier than a 302.  The diagram can be found here:

http://www.telephonecollectors.info/index.php/browse/wiring-diagrams/western-electric/doc_details/2171-wall-telephone-hotel-sets-333-tl