While sending cash in the mail is illegal as previously mentioned, sending collectors coins and notes isn’t. Non declarations of large amounts is illegal, and such trying to sneak it to someone in the post is illegal just like trying to walk it through an Airport strapped to your leg!
Some countries have clamped down on sending coins in the normal post i.e. letters, even recorded and tracked ones, however it isn’t to do with money laundering or illegal activities rather that because most letters are now machine sorted and coins burst themselves out of the envelope (due to the machine sorting process) and they get stuck in the machine. These machines cost 100s of thousands of € and postal services are fed up with it! It’s not just coins, screws, nuts, badges etc, idiots put all sorts in flimsy envelopes, stick the cheapest stamp on and think it is adequate or that a human will handle it for the whole journey!
So Deutsch Post who own DHL said it was not possible to send goods in the normal post anymore, this is partly to do with not paying out for recorded delivery (that are now only allowed to carry documents) but also so that people would have to pay more for goods post or use DHL.
However if you pack your coins well, with cardboard etc, so they cannot get out and the envelope is firm enough to move through the machines no one is going to care. Make sure you send recorded so that if it’s lost you can claim money back in Egypt, don’t put more than the max claim for recorded mail plus what it costs you postage and packing in your swap and you will be okay.
Happy swapping
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