Jovian (363-364 A.D.) - AE3 1/2 Nummus  - 19.78mm, 2.87gr
Obverse - DN IOVIAN-VS PF AVG
Jovian, his diademed and cuirassed bust left.
Reverse - VOT V,
Legend in wreath.
HERACB in Exergue.
The image below was photographed by Rasiel Suarez from dirtyoldcoins.com. The image above is my own scan.

Minted at the 2nd officina in Heraclea (Marmara Ereglisi, Turkey) between 27 June 363 and 16 February 364 A.D.

Reference:
Kent, J.P.C., "Roman Imperial Coinage", Volume 8 (RIC), Heraclea, p439, nr. 108.
Voetter, Otto, "Die Münzen der römischen Kaiser, Kaiserinnen und Caesaren von Diocletianus bis Romulus, Katalog der
hinterlassenen Sammlung und Aufzeichnung des Herrn Paul Gerin" (Voetter-Gerin), Heraclea, Jovianus, p125, nr 2.
Sear, David R., "Roman Coins and their Values" (RCV 4th Revised Edition), p345, nr. 4086.
Failmezger, V., "Roman Bronze Coins From Paganism To Christianity 294-364 A.D.", nr 473JV.
Cohen, H, "Descriptions Historique des Monnaies frappees sous l'Empire Romain" (C), Volume 8, p79, nr. 32.
Carson, Hill, & Kent, "Late Roman Bronze Coinage",  Part II, p83, .nr 1912.
Van Meter, D., "Handbook of Roman Imperial Coins", p305, nr 12.
Suarez, R., "Encyclopedia of Roman Imperial Coins" (ERIC),  p511, nr.30 (B4, O3, R13, T10, M07).
Quality: Very Fine.
Rarity: Scarce.