5. For rare examples of one-piece double-sided Roman combs made from bone, see Overbeck 1884, 453, fig. 252i; De Caro 1996, 276, online available at http://marcheo.napolibeniculturali.it/itinerari-tematici/image-gallery/RA134); Petit & Santoro-Bianchi 2007, 67 (all from Pompeii); Simonett 1972, 116 f. (cemetery Locarno-Muralto, loc. Passalli, grave 37); Virgili 1990, 113, cat. no. 221/19 (Costanza, Archaeological Museum, inv. no. 12772). Even more rare are similar types made of horn (Pugsley 2003, 23, citing an example from Fishbourne), amber (Koster 2010, 183 and pl. 12.40), and silver and lead (cf. above note 3). The Pompeian bronze combs are single-sided.