Heres a few more to see.
https://penny-arcade.info/the-tom-boland-collectionThey were made utilising mostly old x10 stop mechs with no escalators or jackpots fitted.
This made the machines relatively low cost to newer machines and ideal for fairground
operators with low payouts and with less componentry to need servicing [downtime].
They were adorned with variety of assorted casting trims, sometimes to make them more
British in appearance.
The Old Penny [1d] was similar in diameter to US 50 cent but different thickness.