CONTINENTAL .835 MAKER?

Hello
i have a fancy spoon with a maker mark i can’t seem to identify.

Unfortunately, the mark is so small that i cannot get a good pic of it The mark contains a central broad-edged axe flanked on either side with the letter Z, all set in a diamond lozenge. .835 is incised directly beside it. i’m sure it is European.

By chance anyone ‘recognize’ it?

Thanks in advance.

tm.