I found this in a lot, what do I have? [solved]

I found this item that is tickling my curiosity. It is 5.7 g, 29.5 mm, and less than 1 mm thick. A very thin coin. It almost sounds tin when you drop it, but maybe thin silver might make that sound. Some preliminary work makes me think Lithuania. Both the legend and the horseman in he heraldry point this way. The monogram could be CR. Could be an 88 or 98 as part of the date. Please help, this one's driving me batty.

N#25820 

  Date is top left of your first picture - looks like 1663 maybe. 

 Polish–Lithuanian Commonwealth 
Złotówka koronna / tymf - Jan II Kazimierz Waza 

 So yes, Lithuania is part of where it is from. 

Thank you so much. I should have remembered that. I have several others from the Polish Lithuanian Commonwealth.

Hi! The coin is very used,GOOD grade but made of silver as the legend says in latin: MONETA•NOV(A)•ARG(ENTUM)

Lithuania,sec.16,almost sure…

It's from the 17-th.century and exactly the coin ‘’ZakUK'' gave you the link of!