[A/S] what is this airstream??

[grumol1@xxxxxxxxx]

at last, i found the list! -- hello from new member bob, in upstate 
n.y. -- anyway, there is this old (72 license) airstream nearby, 
owner is absent, and i'm trying to determine what model/year it is -- 
couldnt find a model sticker/emblem, but here are the particulars: it 
measures 26' from tongue to tail, has the 13 panel crown up front, 
the 9 panel "dutchman" tail, single axle, non-suicide door -- any one 
know what this is, or where i might find identifying data on the 
outside of it??

thanks, bob adams,(no airstream yet, but do have 
77 chevy van w/6.2 diesel to tow one when i find it -- also own all-
aluminum frame/body grumman olson kubvan, powered by vw diesel)