1 IRC covers priority mail to the country of origin
1 Italian IRC corresponds to 0.60 ¢æ
1 European IRC corresponds to 0.62 ¢æ
1 USA or JA IRC corresponds to 0.80 ¢æ
1 Italian IRC covers reply postage to Italy
1 European IRC covers reply postage to Europe
1 USA or JA IRC covers reply postage to anywhere in the world