sounds fishy to me. he does not say when he bought the bike, it was a fancy bike reviewed by a magazine with a mixed bag of parts? the Tiagra RD was a very late '90s introduction I believe.
from the CL posting
"The components are kind of a hodge-podge but work excellent.
Campy crank
Mavic front wheel, brakes and brake levers,
Shimano bar end shifters and Tiagra rear derailer.
SelleItalia saddle.
Shimano 105 rear hub with Mavic rim (only a couple hundred miles on this)"
there are nice Bassos (Bassi? Bassoes?) out there that might fetch 1200 but I don think this is one
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk