Old Copper Coin 30mm  ???

Possibly a 7 at the top of the first picture, suggesting 17xx ???
But I really have no clue.
The coin is photographed both ways up, front and then back. [ - if it's not sidewards ]

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Diameter,  weigth and a better picture would certainly help...

Hi Monge.
As is in the Title, the coin is 30mm across.
Weight 8.2g, but I'd suspect it was over 10g when minted as it's very worn.
Unfortunately the photos are as clear as the coin is.

The picture is out of focus. We do not even see  the fingerprints.