I bought a 1954 Cambridge . I know MFG started in 1955 so this may be a prototype. The Stirling trailer ,which is sweet, is registered as a 1954 and that in itself is reason for me to believe she was built then.The rubrail is not rubber and all the ones I have seen pics of are,so is that another indication? There is also a letter from Ohio DMV with 1954 as her birthdate.This will be project #2 and may sit for a while as the Westy is closer to being done.See link below posted by 1Fishbone for pics,Craigs has ben deleted, thanks.I noticed that they kept raising the max HP on these as the years went by. Wondering if this was because they just started to make the larger engines during that time? So that will be my next quest, the right engine, thinking maybe 1956/57 as they seemed to be reliable, not sure if pre 55 are as well built. Any thoughts on that?