If you want "generic" tokens, why not buy the generic tokens rather than making a custom generic?
The BYOAC tokens were minted at TokensDirect; here are their "generic" images:

Selecting stock designs also allows you to do runs as small as 1000 brass tokens. A thousand brass tokens with generic designs is only $95.00 plus shipping. (Nickel-plated tokens still have a 10,000 minimum order even for generic designs.)
Happ's generic token looks like this:

They can be ordered in lots as small as 100; they are $17.00 plus shipping for 100 tokens.
--Chris