I just checked the completed auctions on Gunbroker, and none that were used, but not in pristine condition went for that. The ones with any marks on them were $750-ish. The one that looked new with no dings had no reserve and started at $1,039 and got no bids.
Tough call to get $1200, but I thought it would bring more than $750. I would say with no scuffs, dings, etc, maybe $900-$1000. Could always list it on Gunbroker with a reserve and see what happens.
Good luck with the sale.
CF