I found the following image on google search few years ago and had it on file as Neresheimer and Thomas Glaser.
The last mark on my image resembles Neresheimer's mark s520 on the link you kindly provided - I am guilty of overinterpreting my first mark as a rubbed version of s.513 on this link, which on retrospect, is probably different.
Apologies for the error (if this is an error!), I am a novice collector and do not have vast experience. I did not intend to mislead anyone. If it isn't Neresheimer, I would be very interested to know more about this please.