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1940 style domestic Telephone still
worked on the Mullion exchange last time I tried it, but have to unplug
the Onetel box as this does not like pulse dialing.
This version has the call exchange
button, as far as I can remember this was for party lines.
Ships internal phone system, note the
clamp on handset for rough weather.
Office internal phone with multiple
department buttons.
Line Telephone Set Type J YA 7815 used
a hand crank internal generator to call the remote station and batteries
to power the carbon mike, mostly military use.
