Swapping money rules 

1. It is a normal procedure that the person who made the swap proposal sends the letter first.

2. If you have traded with other people, give their names as reference. It is always better than waiting till you're asked for references.

3. The letters will be sent by registered mail only.

4. Pack your coins in a way that make impossible to feel what's inside the envelope (use bubble-plastic or special envelopes).

5. Wrap the coins in something before taping them. The coins should not come in direct contact with any kind of glue.

6. If some coins are dirty or damaged, please inform about that.

7. In case a package gets lost, don't tell the entire world the person who sent it is a cheater. Have patience. Asks what the other person will do. If it's someone you traded with before, you might consider sharing the loss (the other person sends you 50% of the value of the package that's lost).

8. In some countries it is forbidden to send coins by mail, so never write on the envelope what's in it. If you must indicate what's in your package, write: "souvenirs", "collectibles" and so on.