Gaius (Caligula) (37-41).     AE As, Rome mint, 37-38.   Obv.    C CAESAR AVG GERMANICVS PON M TR POT. Bare head left.        Rev.   VESTA S C. Vesta, veiled and draped, seated left on throne with ornamented back and legs, holding patera in right hand and long transverse sceptre in left.     RIC I (2nd ed.) 38.     12.4 g.   29 mm.        Choice example with lovely brown patina. Slightly rough surfaces.    VF/Good VF.