Poland Silver Coin, 1625. 3.90 grams

Description

I've temporarily lost this coin, but left this here in case anyone can identify it.
Obviously the price is crazy high for now.  I'll fix that when I locate the coin.
Fell under something???
Poland Silver Coin, 1625. 3.90 grams.
Shipped with USPS First Class Package.
This is a silver coin from Poland around the time printing presses became common.
It looks to be a 6 Groschen coin, but there are slight variations in the design from what I can find on the web.  And I can't find the 6 on it.
The weight ought to be useful if you really wanted to pin it down.
I just liked the coin.
If anyone knows exactly what it is, please give me a buzz.
A coin collector told me:
There's a roman "VI" under the crown.
Yes, I see that now.
Thank you!