Vandals of North Africa, Gunthamund (484-496 AD). AE Nummus, 
0.49 gr, 8mm. 

Obv: Diademed, draped and cuirassed bust right.
Rev: D within wreath. 

MEC 13-14; BMC -.
 
The letter D could signify the value = 1/1500th of
a siliqua. 
Very rare.
 
Estimate: € 250 
courtesy of Asta Tintinna Numismatica and deamoneta.com, Nov, 2011