And what about ancient coins brought out from UK? Should the buyer have any permission?
There's no problem taking
ancient coins out of the UK. No permission needed.
All the usual general caveats apply of course. The UK authorities would not care, but if a large
consignment of coins of evidently recent
Italian origin was found, they might alert the Italians; and the ability to export from the UK has no relation to the ability to import to the US. US MOU restrictions on Greek and certain
Italian coins apply regardless of the point of exit from Europe. If you illegally export a large group of coins, from, say,
Italy, into the UK, that doesn't render them legal when you try and re-export them from the UK. You can't 'wash' the origin of the coins by transiting them via the UK. Common sense and basic knowledge of regulations goes a long way (export embargoes, unless you have a permit, from
Greece,
Italy,
Turkey,
Cyprus,
Egypt and others; import embargoes to USA). Proportion also matters. There's a whole lot of difference between a few bronzes in your purse and 500
hoard coins from an evident single source.
In all such discussions I really wonder why the questions ever get asked. Why not buy coins via dealers (including those in source countries) and let them worry about export/import? I don't see any benefit in
buying them yourself and exporting yourself. They will probably not be significantly cheaper and you probably will not have much
choice of
rarities - the thin collector market in the mediterranean source countries means that fabulous
rarities are not going to be found in street corner coin
selling kiosks.