AE Tessera, 13mm. 0.74g. 1st-3rd centuries AD.  

Obv: Coiled serpent on a base, head left, star in right field.
Rev: Crescent and three stars. 

With permission of Pecunem & Gitbud & Naumann - Auction 26, Dec. 2014, lot 834
Estimate: 50 Euros.