Promotional cardboard Yankees mitt with layout poster

I've tried to find out something about this promo glove and poster to no avail, and wonder if anyone can tell me about it. It was gifted to me already assembled a number of years ago, with no info as to it's date, etc. The only person knowledgeable about baseball collectibles who has looked at it said he has never seen one. It is in excellent shape, but has a name in ink on one of the joining cardboard tabs. It is freestanding with no rips and almost no edge wear. It is approx. 10 in.x11 in. and 1 in. thick. The poster is on heavy paper and appears to be a photographic layout for printing the glove? It has no marks but has a fold line and a lesser line. Along the top border the poster has AD #13799, PLATE#13799 CM K, and has printing and arrows for Gripper sides. I've looked online peridically and have never found any info, so would be very interested to have any light shed on it. Thanks.