1. The collection and study of stamps, postmarks, and related materials collecting. 集邮对,邮戳和有关的材料的收集和研究;收集。
2. The collection and of postage stamps, postmarks, and related materials stamp collecting. 集邮对邮票,邮戳和有关的的收集和;邮票收集。
3. The collection and study of postage stamps, postmarks, and related materials; stamp collecting. 集邮对,邮戳和有关的材料的收集和研究;收集。
4. Used or unused postage or revenue stamps, stamp-postmarks, first-day covers, postal stationery (stamped paper), and the like, other than those of heading No. 49.07. 使用过或未使用过的邮票、印花税票、邮戳印记、首日封、邮政信笺(印有邮票的纸品)及类似品,但税目49.07的货品除外。