Vintage 10 Oz. Ball Peen Hammer and Two Cold Chisels Brass and Carbon Steel. The hammer is marked but only the 10 oz. is readable.  The brass cold chisel is marked AMPCO USA, 8 1/2" long, 1 1/4 wide cutting edge.  I believe this brass chisel is used in hazardous areas where sparking is not allowed. The carbon steel cold chisel is 8" long with 1" wide cutting edge.  Both chisels are sharp.