Unknown Hanau?

[needy]

Very unusual German dresser box. Anyone familiar with these marks?

[upgmk]

Its Augsburg 1690/1695

[Theoderich]

this are hanau pseudomarks

[AG2012]

Is it Florentine ``Pietra Dura`` mosaic? The mark on the right looks like Florentine fleur de lis. I have not seen Hanau pietra dura mosaics. But I may be wrong - there are no marks expected for Italian silver, not even silver purity.