help with mark?

[Adriane1]

Any help on this mark would be appreciated. No indication of fineness. It is a five piece tea service.
Thanks!
Adriane

[Zilver2]

Hello,
The maker's mark belongs to Moïse Vierny.
Manufacturer jeweller
64 boulevard de Strasbourg, Paris
N° de garantie : 3130
N° de préfecture : 15970
Symbol : a king of chess
Registration date : 4 June 1920
Kind regards