KELLY Registered Axe Head has serial number

is a nice old Kelly axe head it has a fine crack but it dosen't take away from the beauty of this piece....the head has the logo cast right into it says KELLY Registered Axe 1911 then No is cast and beyond that t is a serial number engraved the number of this one is 9544 the head is 7" long with a 5" cutting edge and weighs 3 1/2 lbs...this head can be used but would look great on me with questions...good luck...Richy