It shows use and has been redressed. It is 6-3/16" long overall and 4-7/16" long from the shank. It has no owner's engravings.
Mac Tools 3/4" Wide Flat Chisel Pneumatic Air Hammer Bit 7" Long AH910P NEW
MAC AH913 1/2" Wide Blank Punch Air Hammer Bit S9
MAC Tools USA BTH200 (RARE) Auto Body DOOR SKIN Hammer Mallet 7" Wide Long Reach
Scarce Vintage MAC Tools USA BTH155 Auto Body Bumper Hammer Wide Long Reach
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OTC Air Bag Simulator 418-138 Ford/Rotunda may have other applications