A post inspired by the work of Antonio Pistellato on Gallienus in Zosimus
Types in OCRE by 2 year periods: 267-268 CE is the peak.
Distribution of hoards containing this legend from CHRE
Also from CHRE done by coins rather than by hoards
BUT here’s the years of deposition of those hoards:
Not sure what to make of this. I think I need a finer grained search.
Here’s just Gallienus’ coins:
Hoards by Years:
Liv Mariah Yarrow 