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Drawing - CD259.
Introduced circa 1913.
In general a No. 2 lamp with a carbon filament will have no support, but a metal filament will have a support.
EI, Telephones, General, Z5015 refers.
Drawing - CD84.
Festoon style lamp with Tungsten filament.
50 volts, 10 watts, clear, red and green.
Drawing - CD86.
Pigmy sign lamp with standard bayonet cap.
50 volts, 15 watts, clear, red and green.
Size - 59mm x 29mm.
