Pair of Portrait Reliefs of Diogenes and Hippocrates in Red Marble, probably Italy, 19th Century

Pair of portrait reliefs in red marble on a white marble background, with the inscriptions “Diogenes” and “Hippocrates,” respectively, in red lettering above. The reliefs are framed with gold-patinated moldings.

Dimensions Diogenes: 23.5 × 20.5 × 3 cm (9.3 × 8.1 × 1.2 in.). 
Dimensions Hippocrates: 24.5 × 22 × 2.5 cm (9.6 × 8.7 × 1.0 in.).
Image dimensions without frames (both): 18 × 16 cm (7.1 × 6.3 in.).