Hello Chris -- Is this a trailer? That sure doesn't look like a trailer VIN. Makes me wonder if you're talking about a moho.
Examples of trailer VINs for an Argosy can be found at http://www.airforums.com/forums/atta...3&d=1189129122
-- it would be similar to the example given on the 2nd page. Argosy trailers were built at Versailles, OH, so would have a V in the place of manufacturer spot.
Scroll to the bottom of Vintage Airstream Photo Archives
and open a given Argosy year & model of trailer; VIN examples are at the top of the page for each model. Trailer length is measured bumper to ball; round down extra inches to the last full foot of length.