Philadelphia, Pa. to London, England, 1750. Folded letter sheet via Ireland, straight line "Cork" postmark and "Country" straight line on reverse, brown Bishop mark "28 JA" upon arrival in London, brown crown applied over that to apparently cover up a rating mark in the shape of an "H." magenta "8N" and brown "IN8" and "HR" manuscripts, Very Fine. Estimate  $300 - 400. $0 (Image)