Siliqua or barbaric imitation?

Showmetheway

Ordered this clipped silver piece and have not been able to figure out what type of siliqua it is or if it even is one. It's quite thick (maybe a heavy siliqua variety/ nearly as thick as a U.S. nickel) and the reverse has a depiction of a horseman being speared by a soldier, a design that I haven't come across in catalogues on late Roman-era siliquae. The card flip included said it's issued under Constantius II but not sure how valid that is.

Did some doodling on the coin to get the details out more. Bad photo quality so hope it helps!

Constantius II(?) AR Siliqua(?). Mint Unknown. (Weight Unknown, 17.2mm, 4 h). Obv: CONS__, bust, (illegible). Rev: __L(?)___, Horseman on left, Roman soldier standing right, holding spear, (illegible). Rest of info is unknown.

7Jaguars

Well a bit of imagination perhaps on the obverse. The revers is the FEL TEMP REPARATIO type that is found on small coppers most frequently; I have not seen this in siliquae.

John Conduitt

Yes it's a 'fallen horseman' FEL TEMP REPARATIO bronze. Well, it should be bronze.

They were issued by Constantius II, Constans and Constantius Gallus, which is why there's a question mark over Constantius II, although he is the most likely.

There are a few types, depending in how far the horseman has fallen. Yours is the 'reaching back' variety.

A lot of these were barbarous, which yours might well be. They were often smaller, and yours is quite small. The barbarous ones are often in terrible condition, presumably because they were less well made and no-one hoarded them, so they circulated heavily and have been subjected to the elements for 2000 years.