1 Kreutzer 17?? Further Austria or Burgau

I have this coin
https://en.numista.com/catalogue/pieces24005.html
the reverse looks the same as some Austrian coins, but these all have a portrait on the obverse.

I uploaded it as Further Austria (German States), because it looks like this one
https://en.numista.com/catalogue/pieces19396.html

but then there's also Burgau, in the Austrian States section.
https://en.numista.com/catalogue/pieces18697.html
this looks quite exactly the same as my coin, although I can't identify the year on my coin as one of the years there.

Burgau was part of Further Austria, right? So why is the one in German States and the other in Austrian States?

what's the difference between these coins? Is it the mint letter that defines the "country"? On my coin it's "G"

here are some better pictures of my coin:

your coin seems to be the 1 Kreutzer minted between 1772 and 1779  in Burgau (Günzburg). I uploaded a better image for this coin.https://en.numista.com/catalogue/pieces18697.html

at this time Burgau was part of the Holy Roman Empire (Austria)
Maria Theresa was the sovereign of Austria and also Burgau at this time.

in her full title you will find that she was the "Margravine of Burgau" -> http://en.wikipedia.org/wiki/Maria_Theresa_of_Austria

in 1805 the margraviate of Burgau became part of the new kingdom of Bavaria - which became later part of Germany.

the mint letter "G" defines that it was minted in Günzburg.
at the same time the 1 Kreutzer was also minted with the portrait of Maria Theresa on the Obverse.


Julian