Diagonal face 3 lbs (1360 grams)cross peen hammer. Hardened and tempered 4140 alloy . 54-55RC mounted on an 16”  (410 mm )American hickory handle with a carefully fit walnut wedge. 
designed for those that transition from aggressive drawing and smooth  forging on the forward face. 
well rounded edges ensure you will only leave the forging marks you intended. 
this is for this exact hammer pictured . It is one of one. 
dressed in its final temper colour of bronze with about 1 micron of oxide on highly polished steel .