The only information I have on this coin is as follows:
"Kings Norton Metal Company Trial piece. Obverse: Bust right within raised inner circle and outer border of linked circles, no legend. Reverse: KINGS NORTON METAL CO L.D around an border of linked circles, this encircling 10 small circles and a further border of linked circles, the cypher KNM within. Weight 10.19 grammes"
It is a lovely quirky coin which I bought last year. It is slabbed by CGS at grade 65 which is GEF grade to non Coin Coffin Collectors.
The Obverse is worn and could possibly be a weak strike as it certainly won't be a worn die.
It is the only one known to CGS and I would appreciate any information upon it for my records