The purpose and spirit of the AP ban was to stop armies and manufacturers from selling and using these mines in conflict or war, the ban, which only applies to countries who signed up to the treaty. AP mines being a real nuisance weapon, 10 pence to lay and 100s of pounds to dispose off, rightly so, any de-miner will tell you that. I don't think the spirit of the ban was to pick on collectors, individuals or museums with old rusty relics etc of wars gone past many years ago, of course the local plod would interpret the law as meaning all AP mines, inert from rusty to new but that's what they usually do even when it comes to firearms laws etc, I think a court would throw out such prosecutions if ever a case came to light, i have never heard of anyone being prosecuted for having an old relic S-mine ever since the ban started, there's also a lot of scaremongers out there and rumours spread amongst the ill informed and so called experts. Remember even shells, mortar bombs can be turned into AP mines just by fitting a different fuze or igniter, even an anti tank mine fitted with a more sensitive igniter can act as an AP mine, just kills more people. In hostile countries where the enemy improvises munitions, they can turn a bean tin or a wooden box into an AP mine, so where does it stop. Does this mean that all bean tins, wooden boxes, shells and mortar bombs are banned because they could be made into potential AP mines.