Vintage view: Roman coins

I am on a campaign — a Roman campaign. We rediscovered (after an unauthorised excavation in the familial man-drawer) the 4th century Imperial ‘portrait coin’ I bought for my beloved about eight years ago.
As it was well struck from a sharp die, just once, right at the centre of the metal, it was graded NVF (nearly very fine) and cost a princely €12 on Ebay from a known dealer.