OK that makes sense! Ill look closer at the serial number when i get a chance to see it later this week!! Thanks for the clarification on the trolley valve! And the front axle on this truck is the non driving axle. Was this a common thing?? Thank you guys for all the help!!
P.s. the reason i was thinking this was a late 50's truck was from this pic:
http://thumb10.webshots.net/s/thumb1/7/97/83/75179783NukxnU_th.jpg