In stamp collecting, a stamp cut or perforated into two parts, each half representing half the face value of the original stamp. Officially, authorized bisects have often been used during temporary shortages of commonly used denominations. Unauthorized bisects appear frequently on mail from some countries in some periods. Bisects are usually collected on full cover with the stamp tied by a cancel. At times, some countries have permitted trisects or quadrisects.
In stamp collecting, a stamp cut or perforated into two parts, each half representing half the face value of the original stamp. Officially, authorized bisects have often been used during temporary shortages of commonly used denominations. Unauthorized bisects appear frequently on mail from some countries in some periods. Bisects are usually collected on full cover with the stamp tied by a cancel. At times, some countries have permitted trisects or quadrisects.