Batteries old and new

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A number of non-striking clocks in my modest collection had a space cut out in the case for a much larger than normal battery. All striking Telavox clocks seem to require a standard 4.5Volts flat style of battery whether they strike on a bell or gongs.

Finally I have found a clock with an original large battery still in place! It turned out to be a very large, two-cell, 3 Volt battery with a socket in the top for a two-pin fibre plug. An image appears below showing the large battery beside two of the normal 4.5Volt batteries.