1964 Sinclair Oil Co. NY World's Fair Dinoland wall calendar. Measures 9 x 15-1/4, has a small break in paper at lower right of center window on month pages as shown in photos. Compare to ebay item # 323215628119 ("Vintage 1964 Sinclair Dinosaur Dinoland NY World's Fair Calendar DEALER AD"), which sold for $289 on 4/24/18 with 6 active bidders.
$315 includes BOXED priority mail shipping within the U.S. only. PayPal only.
Complete photos of the entire calendar can be viewed at this Google photo album - https://photos.app.goo.gl/DoO3YUvfeRLyGkGJ2