Hey all, first post, but found a nice bundle of vintage rpg/D&D stuff at an estate sale today. A few items for the PC including this... A copy of Days of the Dragon 1980 Calendar. It appears NOS, super nice shape.

Hoping to get a little more background and estimate. I understand this is the 1st calendar and was advertised in Dragon 33 or an adjacent issue -- which was also at the sale! Any help would be appreciated!

(I cant seem to upload an image so am inserting a like example)