Prince's Letter Despatch, Portland, Maine, undenominated black adhesive, margins ample to large on three sides, tied to cover by indistinct circular cancellation, 3c. rose adjacent tied by "Hallowell ME / Mar / 14" c.d.s., to Boston, Massachusetts, the local with trivial horizontal crease at foot well clear of design, the 3c with natural straight-edge, cover with small nick at right and slightly reduced, yet a most attractive usage of this scarce local, one of only about a dozen covers known, this example being unrecorded in the Lyons census (Penny Post, Vol 10, No. 4); with 2022 Philatelic Foundation certificate.