Height x width x depth: 3 x 9 x 5 cm. Weight: 97 g.
17k yellow gold, oval in shape, finely guilloché engraved with repeated concentric circular motifs, with engraved floral details on the edges decorated with blue enamel.
Hallmarked with unidentified French ancien regime hallmarks from the 18th century, c. 1760-1770, and with the French ET hallmark, stamped after 1864 for imported or otherwise unrecognised objects.
Verified with XRF spectrometer is guaranteed to be gold at the approximate fineness of 714 ‰ (ca. 17 K)