Hartberger coin holders assorted sizes (4 each of: 22.5mm, 25mm, 27.5mm, 32.5mm, 35mm, 43mm & 1 x 43mm). 25 assorted self-adhesive coin envelopes, with crystal clear acid free window. The coin holder protects the coin against pollution and corrosion. There are no hinges on it, leaving the whole surface free to write on.