Folded letter

A folded letter, abbreviated FL, is just that, a lettersheet that has been folded into a self-mailer rather than being placed in an envelope.

 File:Luxembourg FL 1853.jpg|Folded letter with multiple first issue stamps, sent from Luxembourg (City) to France, 1853. File:Roman States FL 1867.jpg|Papal States folded letter sent from Viterbo to Rome, 1867. 

See

 * Stampless folded letter

[[Category:F]]