The more I learn about the D-50 from these posts, the more the plot thickens. As far as the headstock goes, it did not have the Chesterfield logo. It was just the plain Guild script like on D-25's from the 1970's.
The price was 1,800 which is/was right in the middle of the current "Reverb Window" for used D-50's. The condition is another point where the plot thickens. To my eyes, there were no obvious issues. Straight neck, good saddle, bridge, action . . . No dings. To my ears, it was a typically great sounding Guild. However, for some reason the shop does not have it on it's web site (I don't know the forum's policy about naming shops, so I will leave the shop's name out.) and I didn't think to ask more questions because I was assuming I would find it on the web site once I got home. So, I don't know if the shop would say "excellent" or "very good" etc. i also did not ask many questions in the shop because it is on consignment and I am currently waiting on a few things to roll my way before I can go all in on a guitar.