Postage stamp reuse - Wikipedia
https://en.wikipedia.org/wiki/Postage_stamp_reuseA postage stamp is a small required piece of paper attached to mail that indicates that the postage (the cost of sending the mail) has been paid. Because stamps are sent on most mail, the stamp on a received item can be removed and placed on a different piece of mail to be sent, thus reusing the stamp without paying the proper postage. In many countries, such as the United States, reuse of used stamps, whether cancelled or not, is ill…
Reusing Used Stamps - Dinonline
dinonline.org › 2010/08/15 › reusing-used-stampsAug 15, 2010 · The stamps should not be reused. Sources: Pe’as Sadecha (vol. 2, no. 159) presents this as an interesting question: Is a stamp that has inadvertently not been postmarked considered an aveidah , a matter of “lost property,” whereby it would be permitted if the postal service is of non-Jewish ownership, or is it considered gezel , theft ...