1984 Buick LeSabre Diesel Pricing?

Ok i have a 1984 buick LeSabre Diesel car and it runs great has Power windows, power lock, power mirrors, rear window defrost, air conditioning, an aftermarket 1 cd cd player, 137,272 miles, a pretty decent body a couple small dents here and there, the seats are in good condition, the inside is pretty nice except for on the drivers door the fake wood veneer stuff has kinda peeled a little. I was wondering on guesstimation what you guys would price a car like this. Im not sur eif im selling i just wanted to check, and i have checked the Kbb.com site and they only go down to 1989 so thanks.