Help identify a pair of Coins - Maastricht NL [Resolvido]

Hi,

Me again asking for help, I found the following pair of coins (and many more with less details ).

Need assistance identifying them, and any suggestions how to properly clean them if at all .

21 mm radius.

First Coin - better Details :

Second Coin :

Thanks in advance

Yiftach

N#270

Or the next later type of 2 centime coin.

Thanks for the Qucik ID ! 

I meant to post the 2 centime, which is more in line with the size you provided.