Riksdaler 1781 - Genuine ?

Although it does look ok, the weight is off. The weight should be close to 29.25 grams, 28.5 is a little bit too much off for a coin without much wear. Does the edge have a full inscription *MANIBUS**NE**LAEDAR*AVARIS ?

It is not an unusual coin, 1781 had a mintage of more than 500,000, which is fairly high for Swedish 18th century riksdalers. Still, it is a large silver piece and good quality examples will not come cheap.

There are copies, and I think your coin matches the obverse of a Chinese copy that is readily available - but your coin looks better than those ... I am concerned though about the underweight. I don't think a small hole and worn (filed?) off edge letters could account for a weight loss of at least 0.5 grams (silver coins were manufactured with tight tolerances and I don't think any coin weighing less than 29.1 grams would have been let out from the mint). 0.5 g on a 29.25 g coin is about 1/60th of the weight - think of it as taking away a one minute slice from a clock, I don't think the hole on your coin is that large.

5 % tolerance is far too much for 18th century gold and silver coins. For Swedish coins the allowed tolerance was specified to around 1 % in the mid 17th century already. Copper coins is another story, there it was usually only the medium weight that was important and variance between individual examples could be considerable.

I see the dot protrusion, but I don't know what it is.

This is my first Riksdaler, never seen one before. So might have pulled the trigger too fast. Go easy on me Just want to learn more.

Attached is a closeup of the area in question. Just realised a dot is missing too, there should be one between the "G" and "R". Although it looks soldered or modified in that area.

Doesn't bode well for this coin it seems ...