From the 5th century AD, in a small museum in Tuscany : https://coinsweekly.com/parts-of-the-treasure-of-sovana-disappeared-under-mysterious-circumstances/ Soon on sale on eBay !
I wonder if one of the stolen ones was the Ariadne. Any dealer being offered a new one of these has a near 100% chance of catching the thief if they report to police. Rasiel