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.