Great informational post. Thank you mr. Webb for sharing your passion.

I have a DR12?. The label was missing when I got it a few years back. It clearly is from the 70's as it has the first generation headstock logo and adjustable bridge. I am pretty confident it has a solid spruce to and solid rosewood back and sides. The guitar is probably 8.5/10 for overal condition. I would say it is at least a grade 4 instrument in Sigma's scale, could perhaps be as good as a 7.

I am considering selling it so that I can find a same period DR7. If anyone is interested please contact me at gary@tanglecast.com.