Gold-Leaf 23kt-XX-Deep Patent-Book contains 25-sheets of Gold-Leaf, size-3-3/8" x 3-3/8" per sheet, Patent-Leaf min.-16-Gram-weight. This is Surface leaf therefore it is Loose-Leaf. Each Book of 25 sheets has a coverage area of 1.98sq ft. without consideration for waste or overlap. Gold-Leaf 23kt-XX-Deep Patent-Book is Patent leaf also known as Transfer Leaf, each leaf is mounted to special tissue paper. MANUFACTURED IN THE USA! Produced by the last American Gold Beaters! Gold-Leaf 23kt-XX-Deep Patent-Book available here.