Lambert, Lovers in the Garden by a Lake with a Swan, 19th Century, Oil on Copper, Framed

Antique painting done with oil on a copper plate and signed by Lambert. On the pictorial surface a gallant scene is represented in a garden with a lake chatting and sitting on a stone bench. It is necessary to highlight the elegant golden wooden frame that flanks the work. Measurements: 54 cm wide x 64 cm high. This piece has an attribution mark,
I am sure that it is completely authentic and take full responsibility for any authenticity
issues arising from misattribution