Ferdinand Levillain (1837–1905) designed this ceramic vase for the Sèvres company in 1903; it is now in the collection of the Musée des Ursulines, Mâcon, France [1, 2]. This design has been inspired both on naturalistic (plants, snails) and Antique (nudes, masks) elements.
The snails are heavily stylised and probably based on imaginary species; in both specimens the shells are coiled in one plane only. One is dextral, the other sinistral; this seems to be merely for symmetry reasons. The animals are hardly recognisable as such.
 MUM, inv. D.A.563. Joconde | escargot (réponse #181 | 14.vi.2014). http://bit.ly/1i3WrFp.