How much more is it worth?

Interesting car. Many years ago, I used to own 2 '69 GTS 340 convertibles with that color combo. Both were automatics though....one had bucket seats and and AM-FM radio, and the other had a bench and AM radio. Otherwise, they were the same. IIRC, one went to Chicago, and the other to the Los Angeles area. I probably should have kept and restored them, but, back then, they weren't all that valuable.