23 Base workshop was in Germany, so it sounds like your Jeep has seen the cold war.
http://baor-locations.org/23BaseWorkshop.aspx.html
Unfortunately the 50s Jeeps were diposed of prior to the computer records, so there will not be anything on it on the DND database.
Edited to add: I took a phone call while writing my response, so Brian beat me to the punch.