Dear Victor,
Please note, as I stated, that my discussion above deals with the dynastic imitations. Not the VLPP or other groups of imitations. Each group (or workshop) has its own history and characteristics. Unfortunately, there are no serious studies published about the imitations, only scattered notes (like mine).
There is plenty of hoard material showing that during Constantine’s reign, imitations were freely mixed in with official coins (shown by hoards from Durrington, Lora del Rio (unpublished), Killingholme, Bikic-Do, etc.). These are hoards from within the empire, not from “barbarous†border areas. The hoards show that the imitations, no matter where they were produced, circulated within the empire as money, contrary to your statement. If, as you say, they were produced NOT to circulate with the regular coinage, it would be interesting to know where they were intended to be used.
I don’t have the publication here (I’m in south India at the moment) but I know that the Nether Compton hoard, closing at c. 340, included some 20 dynastic imitations among 22,500 coins almost exclusevely of the one-standard Gloria, Urbs Roma and Constantinopolis types, with only a few hundred other coins. This is pretty strong support that these dynastic imitations were produced 335-340. Or how would you interpret these data?
In general, we can assume that imitations were produced at the time when the coins they copy were circulating. They could accordingly be mixed in with the regular coinage and be used as such. That is precisely why the dynastic imitations are so interesting. They were produced a decade after the originals.
I might mention that my material of these includes 24 examples mint marked Rome and 54 mint marked Trier, and that the bulk of these appear to come from a single workshop. Not all of these dynastic imitations are in my personal collection which, however, includes close to one thousand imitations of coins from Constantine’s reign, all chosen for scientific potential.
Let me take the opportunity to thank you for running one of the most informative websites for Constantinian and other LRBs. You reach many more people than I do with my scientific publications, but both types of communication are necessary and they complement each other.
Best regards,
Lars