Hi, I recently purchased a 1968 ARGO with a Koehler twin.From what I can tell It’s one of the first ARGOs. The plate on the fire wall has an OMG ser no of 4***., and old painted over Eddie spade racing stickers. I bought it from an old guy that found it on the back of some property he purchased some time ago.He worked on it,(getting axles freed up, 5 of the tires hold air,I am almost finished repairing engine, freed up handle bar assembly,and getting ready for other repaired)This old relic from the past is stinking cool, and I look forward to getting it going and possibly removing paint from stickers so it could look like it did 50 years ago.any help is appreciated.