French pot - Nillavertas Annecy France

This is a nice little vase from the bootsale this am. The name is well written but unknown to me. Can anybody shed any light, please?

Nillavertas Annecy France

Thank you very much. Another Avenue to explore

First impressions from a quick whizz around the web:
NILLAVERTAS is Satre Vallin backwards.
They decorated blanks from Denbac pottery so they would not have been able to impress their signature into the already fired pot so they scribed the name into the glaze that they were applying, that is why the name is on the side not on the base.