Just picked up a A/unc britannia £2 2015 for £3 at a local antique and collectors fair got to be a bargain with only 650 000 made I am sure these are pretty underrated by collectors and will fetch a lot more than £3 in the future , I dont know when but probably when the mail get hold of this information
The holes were practical in some countries, coins worn on strings around the neck, like this tiny West African 1/10th penny
Indeed the only genuine EDWARD VIII penny I could afford has a hole !!!
It's a nice strategy to collect low mintage circulating coins at low cost. You can't lose and some of them (for whatever random reasons) will become sought after in the future.