This coin has Date in front and I can not find any information about this one. What I find is only coins near this date by Rudolf II, but the same one is not in luck to find:
The type with the date in field obverse is known but is very rare. Here is the only example I could find, from 1587 and with a different reverse: https://www.acsearch.info/search.html?id=574539
I think that members jarcek and MIMAEL are knowlegeable on Silesia coins and might be able to give additional info when they see your post.
Yes, even though I don't express myself so honestly, I'm looking for an explanation. I can't find an example yet. I'm very confused for a year on this part of the ducat - I mean its location.
So far, I've been looking for 1/2 hour - I'll try to keep looking, it's really so far without occurrence.
Ahoj Ivan
I wrote to few museum like OENB, KHM, Taler Universe, MMIA and others. As I can say, I did a research in some Museum places and they responded like this.
From Landes Museum:
"It is a ducat dated 1584 and minted in Breslau / Wroclaw (Silesia). Quotation: Halacka 2011, p. 229, Nr. 468. It is a rare coin, indeed, not known to the elder works (Friedensburg-Seger, Miller zu Aichholz, even Kopicki)."
From Salzburg Museum:
"Your coin is indeed very rare! We don’t have it in our collection.
Maybe the coin collection of the Austrian national Bank holds one of it?"
From OENB Museum:
"We have a similar coin in our collection. It’s from Wroclaw. We bought it in 1979 from Münzhandlung Sauer (Vienna). Until this time it was unedited and was also missing in the collection of the coincabinet of the KHM. But I don’t know if there is a more recent literature."
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And that was all I got. Also I can not find the literature that Landes Museum said me.
I'll give you the e-mail address of a person who won't reject you, deals with Silesian coins of the Middle Ages. He is most professional to express himself .
Write him an e-mail with the photographed coin in weight and size and give him a division that it is probably Silesia-will definitely answer you.