Letterlocking Category: Fold + Mechanical Lock

Letterlocking Category: Fold + Mechanical Lock

DB-1299. Red string secures this multi-page letter shut after it was folded in quarters. The string is tied in a knot and is the "mechanical lock" . There is no adhesive used in this category of letterlocking formats.

Letterlocking: Brienne Postal Archive: A long letter folded, tied, and placed in a wrapper