Most of tokens “Vale 20 Centesimi” are classified as “business tokens”.
There are two possibilities : either:
- due to lack of small small denomination coins, the restaurant is giving a reimbursable token as change.
- it's a game token for gains in slot machines.
I prefer this second possibility cause most of these tokens bear name of bars where slot machines are likely to be installed. But Nimista will class as "game and arcade token" only if it is proved.
For exemple this following token may be classed as business or game token, its purpose is not written on it.


then this one is proved to be an arcade token:


For France all “20 centimes à consommer” and for UK all "to be spent in the house" are arcade tokens

In any case the value of your token is between 1€ and 2€ for whom it may interest.