Augustus, struck by Tiberius, circa 15 - 16 AD
Æ As, 28mm.  10.9 grams
Obverse:  DIVVS AVGVSTVS PATER, Radiate head left, thunderbolt left.
Reverse: S C, Draped female figure seated right with feet on stool and holding patera and long sceptre.

Reference:
RIC71 (Tiberius)

Provenance:
Ebay, August 1008, $150

Marcus Agrippa, struck by Caligula, 39 - 40 AD
Æ As, 29mm, 11.0 grams
Obverse:  M AGRIPPA L F COS III, Head left.
Reverse:  S C, Neptune standing left holding dolphin and trident.

Reference:
RIC58 (Caligula)

Notes:
One of the first ancient coins I purchased, from a bag of mostly junk at a local coin shop.  This coin cost me about 70 cents at the time.