No duplicates. There are cards stuck to the surface. I think it's from melted rubber bands. Numbers 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 77, 78, 79, 80, 81, 82, 83, and 84 are present.