Following the empress' death, a series of posthumous coins were issued to commemorate her deification and consecration, about which I have previously written. Four obverse legends are used on these issues. In likely chronological order, they read: DIVAE FAVSTINAE PIAE DIVAE FAVSTIN AVG MATR CASTROR DIVA AVG FAVSTINA DIVA FAVSTINA PIA Among these bearing the final posthumous inscription, DIVA FAVSTINA PIA, are a denarius and a sestertius bearing the inscription CONSECRATIO and featuring a rectangular altar enclosure with closed doors and ornaments at the corners of the roof, which have puzzled the authors of the various major references. Faustina II, AD 147-175. Roman AR denarius, 3.36 g, 17.1 mm, 5 h. Rome, 4th posthumous issue, AD 176 or later. Obv: DIVA FAVSTINA PIA, bare-headed and draped bust, right. Rev: CONSECRATIO, altar-enclosure, with door in front and antefixae on corners above. Refs: RIC 746; BMCRE 725-27; Cohen 75; RCV 5217; MIR 61-4/10; CRE 158. Faustina II, AD 147-175. Roman orichalcum Sestertius, 19.75 g, 30.0 mm, 1 h. Rome, 4th posthumous issue, AD 176 or later. Obv: DIVA FAVSTINA PIA, bare-headed and draped bust, right. Rev: CONSECRATIO S C, altar-enclosure, with door in front and antefixae on corners above. Refs: RIC 1706; BMCRE 1579-81; Cohen 76; RCV 5230; MIR 60-6/10. As I noted above, the nature of the ornaments at the corners of the roof of the altar-enclosure have puzzled numismatists over the years. Cohen notes the altar is "sometimes ornamented with two palmettes." Mattingly and Seydenham (RIC 3, pp. 273, 349), following Cohen, describe the reverse as "Altar (sometimes decorated with palms)." Later, writing in BMCRE4 (p. 491) Mattingly describes the reverse as "rectangular altar, with horns l. and r., and door in front." Sear (p. 338) similarly describes the reverse as "altar-enclosure with doors in front and horns visible above." These ornaments are more prominent on some coins than others, depending on the die engraver. See, for example, this sestertius. This must have been what Cohen had in mind when he called them "palmettes." Roman orichalcum Sestertius, 19.75 g, 30.0 mm, 1 h. Palmettes? Horns? What are those things? They are most likely antefixae, ornaments placed at the eaves of a classical building to conceal the ends of the joint tiles of the roof. The Wikipedia article on antefixae illustrates many antefixae from a variety of cultures in antiquity, such as these Etruscan and Roman examples. For a fascinating article about ancient roofing styles and construction, see here. Do you have any coins that illustrate roofs with antefixae??? Let's see them! Post anything you feel is relevant!