Augustus, Rome mint, issued by moneyers Apronius, Galus, Messalla, and Sisenna, triumviri monetalis, 5 BC.,
Quadrans (ø 16-17 mm / 1,73 g), copper, axes medal alignment ↑↑ (ca. 0°),
Obv.: GALVS SI[SE]NNA III VIR , legend around [garlanded] altar with bowl-shaped top. (RIC type 5)
Rev.: APRON[IVS] MESSALLA A A A [F F] / S C , legend around large S C . (RIC type Ba)
RIC I, p. 77, no. 451a. corr. (scarce) ; BMC 249 ; Coh. 372 ; BN 789-791 .
The editors of the revised edition of RIC I created a great deal of confusion when they blundered the descriptions of the quadrantes of 5 BC, by mis-matching legends and types.