Type 89, and the square holders, was a very short lived film choice from Polaroid. I still have a sales sheet and free tryout coupon from 2003 for this. If you find any, it will be old stock. There was little cost advantage, which I why I think it was not adopted by many photographers. Best to stick to 669, or 690, and the larger and more common holders.

Ciao!

Gordon Moat
A G Studio