The rear drops appear to be Campagnolo. The fork could be a replacement, which raises the red flag of has it been crashed.
I find this quote from the ad rather humorous:
> This bike appears to be in good vintage condition with normal signs of
> age and use. Tires will need some air.
A peek at the 1971 Schwinn catalog on Bob Hufford's site shows the T22 Paramount tandem, whose frame looks pretty much like the one in the auction. Hard to discern any details, though.
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Lynn Travers
Hazelwood, MO