U-55: USA

2 3/8" X 3 1/4" (60mm X 82mm)

 

(dome incuse) FRED M. LOCKE

{Fred Locke}

 

Picture courtesy Bob Berry

2 3/8" X 3 1/4" (60mm X 82mm)

 

No markings

{Fred Locke}

 

Picture courtesy Elton Gish

U number assignment by Jack Tod.

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