PROTOTYPE COINBOX MECHANISMS
 

The mechanism has an integral generator (Picture dated 1936)

 

The mechanism has an integral generator (Picture dated 1936)
The GPO decided to fit a hand generator to the back board instead.
Shame, as this setup is a lot smarter

 

Box Coin Collecting No.13
Fitted with a secure top cover locking device (picture dated 1930)

 

Box Coin Collecting No. 13
Fitted with a single button (Picture dates 1930 )

 
 
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Last revised: July 25, 2022

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