Time to bump this thread with some new acquisitions!
TMNT v1 #16 was the first Mirage TMNT comic I ever read, and first TMNT comic that I read period. I bought it at Hills Department Store, which at the time had hundreds of copies of only this issue in the toy section. I used this issue to help me learn how to draw Turtles. I read it over and over until the cover was almost falling off. So the issue holds lots of nostalgia value for me. When I saw that some pages from the issue were for sale, I had to jump on a few.
Page 2 original art:
Page 3 original art:
Page 15 STAT (high quality art reproduction). I had to get this because of the classic TMNT #1 throwback:
also, issue 23 title page OA: