Pinit Coretek (polyester)Coin Flips2.5 x 2.5". 50 per pack. Crystal-clear museum-grade acid-free material. SKU: ACF2525PET Add to Shopping Cart1Review Add to Cart DETAILS Coretek (polyester) Coin Flips 2.5 x 2.5". 50 per pack. Museum-grade material. This material is DETAILS Back DETAILSCoretek (polyester) Coin Flips 2.5 x 2.5". 50 per pack. Museum-grade material. This material is 4.0 mil uncoated, crystal-clear, biaxially-oriented. Reviews 5 Back Ratings & Reviews 1 Review 5 stars 1 reviews 4 stars 0 reviews 3 stars 0 reviews 2 stars 0 reviews 1 star 0 reviews Filter By DateBy RatingAll Reviews There are no reviews available for your selection