A whimsical gold paper-knife

A whimsical gold paper-knife, mid 18^th century, the shaped tapering handle decorated in the Rococo manner with enamel birds, flowers and a dog amongst shells and scrolls on matted ground, two white enamel bands with the motto rien nest trop and followed by bon pour ce quon translating to nothing is too good…for what you love, elaborate shell tangs to the plain gold tapered blade, 24cm, fitted later case