Candle Holder

I bought three (one large, two smaller) of these candle holders
Based on image search, this design is by Matthew Hilton. And some with the same marks on the bolts are indeed sold as such online. Some sellers say it's "attributed to Matthew Hilton"
The asking prices of this type of candles is high, and as expensive things are often copied, I would like to know if it's possible to tell if these are indeed Hilton versions, or just copies.