Possibly. Maybe I’ll look it up. I don’t know when the current weights and measures system was developed but I would guess probably more than 1500 years after the fall of Rome. So I was just being cute saying the ancient Trojans were skimming metal off their coins. But maybe the middle ages French were? :-)
i think it was the romans who were diluting facsimilies of original greek silver drachmas with other metals. i could be wrong.
Look up “troy weight” in Wikipedia. The article will tell you all about the origins of the troy weight system and how to convert to avoirdupois and metric units.