Eveready 430-E Hearing Aid "B" Battery
This
is an Eveready 430-E 30 volt Mini-Max hearing aid "B" battery used
mainly in the early "Monopac" (1-piece) vacuum tube hearing aids in the
1940s.
The Eveready 430-E weighed 2¾ oz., and measured 2¾" by 1¼" by 7/8".
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Ad in the Saturday Evening Post, January 22, 1949, showing the 30 volt Eveready 430-P "B" battery (left) which then
cost $1.65, and the Eveready 1040-P 1½ volt "A" battery with which it
was often paired.
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