Augustus, AV aureus, ca. 19 BC. Moneyer L. Aquillius Florus. 8.08 g. 

CAESAR AVGVSTVS, laureate head right wreathed with oak.
L AQVILLIVS FLORVS III VIR around open flower of six petals and stamens.

RIC I 308; Babelon Aquillia 3; Cohen 363; Bahrfeldt 172; BMC 45; Calicó 125 (this coin); Biaggi 157 (this coin). 

Very rare, only three in Bahrfeld.

With permission of Numismatica Ars Classica auction 52, Lot 309, Oct 2009.