Silly question: Most of us are familiar with the 1.5 volt dry cell "battery" used in toys, radios etc. Originally zinc-carbon but now alkaline, nicad etc. From largest to smallest of the available ones are sized D, C, AA, AAA and (rarely) N. Question is, was there ever a "B" sized cell or an "A" sized dry cell? They would be smaller than a "C" but larger than a "AA", if they existed, assuming the usual size pattern held. What were their dimensions? How about "E" or larger?
(note that I am not asking about filament, plate or grid supply batteries in tube circuits which were often labeled "A" "B" "C" respectively. Those are functions, not physical sizes)