A recent find by archaeologists from West of Scotland Archaeology Service (WoSAS) draws attention to the later mechanism. Five ancient coins were found in archaeological supervision of landscaping works conducted in Port Glasgow, Scotland in redeposited topsoil mixed with hardcore from the adjacent road surface. They were found along a grassed verge during the removal of turf and seem to have been brought to the site with material that was imported onto the site during road construction. We are not told, but I wonder whether these coins were not found during a metal detector survey of this deposit?
A point of interest is a deposit adhering to one side of each of the coins which appears to be glue or resin. This suggests to the excavator that they may have been mounted at some time, which in turn could suggest that they may represent part of a former private antiquity collection. "Two of the coins appear to be very similar, and while one has a resin deposit on the obverse, on the other the resin is on the reverse, suggesting that the intention may have been to display them side-by-side, which would support the interpretation that they form part of a collection". Three of the coins are "ancient Greek" in type, but the other two are Late Roman in type. The coins have a suspicious look to them however, they are of types that should have been struck in silver (and the corrosion products in the photo do not really look like corroded base silver should look). One of the Macedonian ones has what seems to be a casting flash on the edge while the third "Greek" coin has very flat relief undifferentiated from the background and a soapy look typical of the cast fake. It seems that the collector who acquired these items on the antiquities market at some time (we are not told at what date the soil layer was dumped) did not have a very discerning eye.
The excavators suggest it was part of the scattered collection of an "antiquary", but I think the possibility that they formed part of some teaching material used in a local school cannot be ruled out.