Hunter, Argosy made a 20' in 1974, ' 76 and ' 77. and a 24' in ' 74 - '76 and again in ' 78. Airstream made a 25' in 1990-'92. Finding one of the early '90s Airstreams is desirable condition has a little better odds I'd guess. Pristine condition will be a challenge. Jim Greene ' 68 Tradewind