The flan is still strange to me, I can't find any other coin that seems to have the same weird oval flan. I guess it was just a uniquely shaped little piece of metal that got struck!
These Gaulish coins, even the "official" ones, didn't often have
good quality control. And the barbarous, who knows what you will get. The coin below I bought online, I
had to ask the seller whether he photographed at an
oblique angle, it looked so distorted. Nope, he shot it straight on, it just has a football shape.
I don't know if yours has enough detail to identify as barbarous or not, but from the handful I've seen, the funny looking Victorias with distorted features often are...