There are at least three rev.
dies showing this arch between the two pediments supported by columns: cf.
your coin, the Gorny
specimen you refer to, and Paris
pl. CXIV, 466.
The arch between the two triangular pediments was already pointed out by Cohen
91 in his
description of the Paris
coin: "dans le fond, un temple à quatre colonnes à deux frontons triangulaires, soutenus chacun par
deux petites colonnes et un fronton cintré" = "in the background, a temple of four columns with two triangular pediments, each of which is supported by two small columns, and an arched pediment
It would have been clearer if Cohen had
written, "in the background, a temple of four columns, with an arched pediment
in the center, between two triangular pediments left and right, each of which is supported by two small columns".
A feature which is clearer on the Paris
specimen than on yours and Gorny
's: the horizontal beam through the whole temple just above the heads of the two musicians, which cuts off the two middle columns in each of the triangular pediments, explaining why Cohen
called these columns "small". According to Hill
Congress 1961, Atti, p. 279, there are thinner columns and a horizontal beam in the other type
too, but only partially rendered, and indeed hardly visible in his
photo (pl. XX.7). He considers these dupondii
to represent the sacrifice to the goddesses of childbirth before a wooden theater on the Campus Martius
on the second night of the Ludi Saeculares
, but cannot explain the two variants of the type
: either two views of the same building, or the rarer variety is an inaccurate version which was withdrawn. Two circular pediments between two triangular pediments, each supported by two columns, in the second story of a portico
on a provincial
coin of Neocaesarea in Pontus
and Trell, Fig. 71. There is doubtless more recent bibliography on the question, with which I am unfortunately not familiar. Certainly these two variants of the type
deserve separate numbers in RIC