If your market is as dead as you say, I would ask $1000 and $900 cash takes it home.
If you want to sell it for a bit more and don't mind packing and shipping a nice eBay ad with better pictures should net you $1400.
Serotta's are still in demand because they were well made and made in the USA.
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80 Mercian Olympic, 92 DB Overdrive, '07 Rivendell AHH, '16 Clockwork All-Rounder