Just wondering why would this silver sugar box? be stamped twice with the Vienna "A" import mark?
From my searches on the forum I was able to identify that this piece is by Josef Zauza, Austrian/Vienna origin.
Thank you for your help in advance!
Front of the Sugar Box?

Back:

Back Hallmarks:
JZ:

Austrian Dianna Mark:

Lock hallmark:

Inside hallmarks:


Foot hallmark:

Top Aerator? Hallmark:
