This antique copper on wood PRINTERS BLOCK shows a logo that says "National Congress Of Parents And Teachers 1897".  This PTA organization was founded in 1897 mostly by mothers but expanded with time.  With the proper equipment you can make prints from this printers block.  It also makes a wonderful gift for a Teacher or PTA member. The size of this printers block is 1-1/16" inches tall x 1-1/16" inches wide and the standard "type high" 15/16" thick.