Crossed arrows and crowns are a pretty good indication of a Swedish coin. These old copper pieces are, in general, easy to find in poor condition. If you can find one that is not worn to a frazzle, you have found a valuable item.
The inscription above the three crowns changes with individual date. VLRS points to ruler Ulrika Eleonora (1719 to 1720), FRS to Frederick I (1720 to 1751), and GRS to Gustaf III (1771 to 1792). The inscription on your coin has small effect on value; all these coins run roughly the same in catalog value. The 1/2 ore denomination says so explicitly on the side with the crossed arrows. Like the inscriptions, the 1/2 or 1 ore denomination does not change catalog value very much.
worn: $5 US dollars approximate catalog value
average circulated: $70
well preserved (like our picture): $250
Apply the concepts of our Important Terminology page to these inflated catalog values.
There is a special 1772 1 ore coin that is much thicker than a normal coin. These catalog for $800 in average circulated condition.
For more info on Swedish coins, go to CoinTypes.info.