Joe,
Not trying to beat you down but based on the condition (aftermarket pipes, starter control/righthand control off or missing, tear in seat, missing fenders and dented tank), I'd say in the 800-1000 range. That being said, I drove through Austin TX this summer and was amazed at the asking prices for vintage Hondas there compared to here in the Northeast. If you get the RH control worked out you could maybe get in the 1200-1400 range.
Good luck with your sale
Steve