Dating a Vienna mark

[Peartree]

I have a bracelet with the marks as shown. It has both Vienna mark A inside the dogs head mark for 1872-1922 and a solo A mark for Vienna 1867-1872. Am I safe to assume this piece crossed the change in assay marks and therefore dates to 1872? Thank you.

[Qrt.S]

Yes because of the mark in front of the dog's nose. It dates the mark to 1872-1922. Unfortunately the mark to the left is unreadable. It would have told the maker.

[Peartree]

Thank you. The bracelet is marked elsewhere for MuS, Markovitsch and Scheid.

[Peartree]

I have done more research on the solo Vienna A mark. It was clearly used after 1872, at least as late as 1882 and probably after that. Even in conjuction with the dog mark and A mark inside the dogs head stamp.