2 1/2" X 3 3/4" (61mm X 95mm)
No markings
Picture courtesy Bob Berry |
2 1/2" X 4" (61mm X 101mm)
(top incuse) GPO
Picture courtesy Bob Berry |
U-1577: England
2 1/2" X 3 3/4" (61mm X 95mm)
No markings
Picture courtesy Bob Berry |
2 1/2" X 4" (61mm X 101mm)
(top incuse) GPO
Picture courtesy Bob Berry |
U number assignment by Bob Berry April 2016
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