1792 John Wilkinson 'Iron Master' Copper Token

The famous Iron master John Wilkinson was the only person whose image appeared on coinage outside of Royalty during the 18th century, many of these copper tokens survive in varying conditions, from my research I have found conflicting information, this particular token has the Wilkinson name as 'Wilkison' one source suggests this error was acceptable and all tokens issued carried the error, another source suggests that copies were made of these tokens with various spelling mistakes and are considered forgeries, my feelings are that this token is right but has the miss spelling, either way it comes in good condition.