This is a block of 20 Spanish charity stamps "Asociacion Benefica Correos (Postal Beneficial Association?)" issued in a 5 Cts denomination, in the early 20th century. Other text on these stamps: "Imperial Postage" on the left side, and "No postal value" on the right side. Original gum, MNH. There is some separation of the perforation in the gutter, not extending to the stamps, and the block has been folded horizontally. Please see my other cinderella listings.