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This is an ancient Roman silver Siliqua, of emperor Julian II, dating to 360 - 363 A.D.
Obverse: FL CL IVLIANVS P P AVG, "Flavius Claudius Julian, perpetual August (Emperor)", rosette-diademed, draped, and cuirassed bust right
Reverse: VOTIS V MVLTIS X "vows (prayers) on the fifth anniversary (of the emperor's rule), and for his (anticipated) tenth anniversary" in four lines within wreath.
This coin was minted at Lugdunum (Lyons in France) mint mark LVG. This coin had travelled across the English Channel, being found in the East Harptree Hoard in 1887. Coins from this hoard are of exceptional quality and show dark toning. From the East Harptree, Somerset Hoard (found 1887, published by Evans, J. in NC (1888) p. 22-46 and Robertson, A., Inventory of Romano-British Coin Hoards, 1424). A very nice coin with a good dark tone and great provenance!
DATE: 360 - 363 A.D.
MINTMARK: LVG (Lugdunum, Lyons, France)
SIZE: 18mm diameter
WEIGHT: 1.80 grams
Attribution: RIC VIII 219; RSC 163
PROVENANCE: Originally found in the East Harptree Hoard, Somerset.