I have just notice what looks like the letter H on the left hand side of the T in this Vienna mark, Hermann Ratzersdorfer box.
Have members seen letters in this place before? very ,very,very ,small letter,This may have been his own mark.
I have not seen any letters on this bar in any Viennese books before. they all seem to be plain.
A bit blurry taken of mobile phone image (blown up)
I also notice the letter A did not stamp properly (I can see a faint print of it ) Austria.
![Image](https://i.imgur.com/JsQStFY.jpg)
![Image](https://i.imgur.com/Ig3Okxb.jpg)
![Image](https://i.imgur.com/tDHNmHi.jpg)
![Image](https://i.imgur.com/1RXAUzS.jpg)
Regards Guido.