This is a silver bullion coin that has been continuously in use since it was first minted in 1741. This is the 1780 strike of the series. Originally there were 9 Thalers to the Vienna Mark but this changed in 1750 when they introduced a new system that debased the currency to 10 Thalers to the Vienna Mark.
The silver coin on offer here is of a lower grade and is worn on both sides. In some ways for a bullion coin that is almost 250 years old I would say it has been a round just a bit.
Never the less examples from this era are an interesting area of numismatics and the coin on offer here is still legible and the general design still obvious.
A great collection filler and wonderful coin for a beginning collector not looking to pay top dollar but wanting to fill the gaps in their collection.
As an interesting aside the word thaler gave rise to daalder and daler, which later became the word "dollar" in English.