Maria Theresa Thaler Identification

I have found these informations.Its a
Austria States Maria Theresa Silver Thaler
KM#15 , Dav.#1147
Gunzburg mint Burgau
Obverse : Armored Bust of Maria Theresa Reverse : G below eagle in cartouche

Btw the 1765 Guenzburg MTT is quite common. It shouldn't be described as rare. Ok checked my references 1765 was a transition year. THE SC signature was introduced during 1765 so you find MTT with and without the SC mint signature

Thank you I really needed to pin down when some of the mintmark/mint signature changes occurred so you helped me....isn't that whats great about Forums like this?

An update I was looking at a better reference and I obtained a much clearer understanding. The mint signature's were officially put into place on the 16th June 1766. So why's it on a 1765 thaler? Because the 1765 thaler was restruck in 1766. Maria theresa's husband died in 1765. In 1766 another form of the MTT was produced(the Burgau conventions thaler)Banks and traders wanted the standard MTT so the 1765 was restruck but following the rules; with the mint signature SC added. So the no "SC" 1765 MTT are original strikes and the ones with SC are restrikes produced in 1766. IN 1767 a new widows bust was produced.

Goodness

Can you provide a better lit picture of the reverse. For now it looks genuine (probably Vienna mint). It appears to have been holed and plugged. Something to note. From the Austrian Habsburgs perspective the Vienna mint was the main mint and Guenzburg. burgau as Krause insists on calling it( LIke calling the denver mint "Colorado". Was a minor provincial mint. These days every one seems to assume the Guenzburg mint is the Main type of MTT.

I feel like I am repeating my self here. On Austrian Habsburg thalers form the mid 18th century you find MInt marks and mint signatures. MInt signatures were only introduced in 1766 As I stated earlier


The S is Tobias Schoebl the C is the mint Warden Josef Hubert von Clotz Basically it is impossible for Habsburg Thalers to bear mint signature prior to june 1766.... So any 1765 dated MTT( known to be restruck) bearing a mint signature of S C were restruck after the 16th June 1766. As this is from the state archives and is published in a number of different places I can not see how you can think I am wrong on this point

The convention thalers were a coin of the realm. Issued for use in Swabia. Apparently they weren't what the banks were looking for for sale to the Levant hence the restriking of the 1765 MTT. Obviously the 1766 Conventions thalers that don't have the mint signature SC were struck before the 16 June 1766