SWF Ribbed Semaphore Lenses, 1949-53
SHO Grooved Semaphore Lenses, 1949-53
L&R Semaphore Lenses, 1946-49
Convertible Semaphore Lenses, 1952-60
SHO Smooth Semaphore Lenses, orange, 1953-55
SWF Smooth Semaphore Lenses, orange, 1953-55
SWF Smooth Semaphore Lenses, yellow, 1959-61
SHO Smooth Semaphore Lenses, yellow, 1955-60
SWF Smooth Semaphore Lenses, yellow, 1955-59
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