I can't really tell, but it looks as if it might be an etching. The artist would trace the design onto a sheet of metal called a plate and then put a film of ink over it and the paper would be laid on the ink and the etching would be printed onto the paper. If it is an etching there will be two numbers on the edge with a slash between them. Like this 27/50. That means its the 27th print out of 50. After the last print then the plate would be destroyed. This number system is also on prints.