Free frank

A free frank was a mark applied by means of a hand-stamp to parliamentary mail in Britain to indicate that the mailed item did not require postage. The privilege of free franking was granted to four different classes: Members of Parliament; peers sitting in the House of Lords; office-holders, largely as stipulated by Acts of Parliament; and to archbishops and bishops sitting in the House of Lords. Requirement for free franking were that the mailed cover had to be signed by the official sender. As a result, free franks were avidly sought during the first three decades of the nineteenth century for autograph collections. This was accomplished by cutting out the front panels of the envelope which carried the inscriptions which were required under the use of this privilege. These panels are referred to by collectors as free fronts.

This keyword could refer to multiple things. Here are some suggestions: