There are no personal markings on this tool.
Snap-on PHG71A Air Hammer Attachment Round Hammer 1" Diameter Head 4-1/4" Long.
Snap-on Tools PHG71B Air Hammer Attachment Round Hammer 1" Head 4-1/4" Long
Snap-on PHG71 Air Hammer Attachment Round Hammers 1" & 1/2" Vintage Made in USA
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