http://www.plymouthherald.co.uk/news/local-news/treasure-hunters-unearth-nearly-2000-371465
another nice find
AD 253-274: reigns of Valerian, Gallienus, Postumus, Tetricus, Claudius II and Aurelian. It looks as if someone perhaps with a guilty conscience secreted their savings or ill-gotten gains when Aurelian reclaimed Gaul and Britain from Tetricus.
it is a thought.....