B(oston) Sh(ip). Ms pmk with "21 dwt. 16 gr." rate on 1742 fl sheet addressed to John Kinsey, Esq., Speaker of the House of Representatives in Philadelphia, Pa., "via Boston pr. Capt. Hall" route endorsement and inside docketing "From Ricd?d Partridge" who was the London agent of the Pennsylvania Assembly of Quakers and a close associate of Benjamin Franklin; some archival corner reinforcement on inside, Very Fine, a very scarce triple rate usage from Boston to Philadelphia. Estimate  $300 - 400. $0 (Image)