Art nouveau silver box - maker?

We have a silver box with a malachite stone marked 800 on bottom. Any help identifying the maker or origin would be greatly appreciated!

 

Italian, during the Fascist period.

 

The lozenge on the right of the 800 will have a number (for the maker), then the 'fasces symbol,' and then a 2 letter code for the region in which the maker was registered and where the item was (theoretically) assayed.

I think I see # 512 and the letters MI. Is that what you see too?

 

512 or possibly 317?
Thank you so much for your help!

 

MI = Milan

If it's 317, the maker was Borghetti Ugo Fabbrica Argenteria, registered Jan 23, 1940. If it's 517, that number was assigned in 1955, so who held it, if anyone, in the 1934-1944 time frame cannot be determined from the source I used.

 

Not Art Nouveau in style, JMHO.

 

Italian

 

here's everything explained.
http://www.silvercollection.it/italianhallmarks.html

when you deciphered the province, then you may also find the silversmith by his number.
nonetheless there is one "speciality" in the old Italian silver marking system - a number can be reused when the shop closed/ silversmith died etc.. so it's sometimes advisable to check era against style.

stylewise this one is a hard thing. I agree with Marie.
there was the stile novecento though, that took style elements from the 19th c. and looks mostly like copies of the continental classicism.
https://en.wikipedia.org/wiki/Novecento_Italiano