Greetings, this is my first foray into the accoustic forum, as I spend 99.9% of my time at tdpri over at the amps and cabs forum. Enough digressing. I have a 1980 Sigma DR 35 with a decent, though marked up hard shell case (I believe it is a Guild case). I recently had the guitar worked over by a top notch repair shop in Toronto, and it is 100%. Aside from a few obvious scuffs here and there, it is in very good condition, with a beautifully aged spruce top and 3 piece rose wood back. One of my neighbours is in love with the guitar, so I have contemplated selling it to him as I never play it, and it sat for three years before I took it into the shop (last fall))to have it set up properly. Does anyone have any idea what a fair price would be? I paid $550for it new, and the case was $150 at the time. Cheers.