Here is another example I just got. It was described as having an artificial sand patina and listed as ex. ROMA Numismatics. They did not apply the sand patina, but had some consignments in a few auctions from Athena Numismatics. I will leave the patina as is, since I am not selling this one.
Vandal Civic Issue
A.D. 480- 533
9x10mm 0.8gm
Obv: diademed and draped bust of Carthage left, holding palm.
Rev: Bar over N over IIII in three lines.
Carthage mint
MIB I, 20 (Gelimer); BMC Vandals 12 (Huneric); MEC 1, 55.