Rhegion, Bruttium, AE pentonkia, ca 215-150 BC. 22mm, 6.60 g. 

Head of Athena left, wearing helmet decorated with griffin.
RHGINWN, Athena standing left, holding Nike, spear and shield; thunderbolt and P in left field.

HN Italy 2554; SNG ANS 756-760. 
Rare. 
Estimate: $100.

With permission of cngcoins.com, Oct 2011