ok...this is 1st 50's vintage truck/auto I have seen other than Cameo... been a car guy 20 + years ...never seen the "hydromatic" badge on any chevy or gmc truck ever...period... it's a pretty bold badge- size wise.. guess it may have been considered an upscale option worthy of advertisement..I've been contacted by a local stovebolter who said the auto's came about in 54 and that he'd seen a few... he runs a resto shop
this truck is pretty well stock... still has stock seat ..stock spare tire carrier under the bed...the engine looks stock..full set of stock GMC hubcaps...GMC valve covers sitting atop the straight 6.... has a little "100" I believe in the grill area...its look is weather-worn..but really pretty solid.. I felt it was a pretty good buy anyway... nice old truck that needs some tlc..