Lithuania 2 Denar Sigismund II - two mints? [solved]

I'm having trouble determining the difference between these two types. Can anyone point me in the right direction.

N#36694

https://en.numista.com/catalogue/pieces254030.html

Hello 🤖

Without pictures, it will be very difficult for anyone to help you. Could you please post clear pictures of each side of your item?

Please note that this is an automatic message. Feel free to ignore if it is not relevant.

The difference is in the metal content (silver billon of different percentages of silver)

One is .219 silver 0.64g, 1mm

One is .375 silver 0.6g 

No difference, this is the same coin that circulated on the territory of both countries 

coincrze

The difference is in the metal content (silver billon of different percentages of silver)

One is .219 silver 0.64g, 1mm

One is .375 silver 0.6g 

I feel those differences, especially the weight vary on a coin-by-coin basis. These were hammered and I assume that the silver content fluctuated as well. I doubt these destinations warrant the need for a new type or Numista page altogether.    

Grinya

No difference, this is the same coin that circulated on the territory of both countries 

Ok, that's what I thought. They are listed under the same country - perhaps some merging is in order?

Yeah i agree, there might not be the need for two pages, but i still see the reason why they did it, they probably have their reasons, maybe historically, there was actually different variants…?

Some time ago I asked to move Lithuanian coins minted before Union from Poland to Grand Duchy of Lithuania. Maybe missed dupe while moving or Poles had one of them registered as their own.

1559 and 1550 year variants are typos/mint mistakes. One author called them fakes from 19th century.

We also had golden probe/trial variants in 1565 and 1566.

Book from 1992 lists only ~220 fineness variant

Yes, these are duplicates and will be combined.  Gumowski also has the composition at 0.219 (3.5/16ths), so this is what will be used.

It seems both Kopicki and Gumowski have 1550 and 1559, so even if these are errors, we will keep them in the date list for now, and add a comment.

Thank you.