Lot 72398 – 1d Blue, worn impression, uncancelled on folded le

1d Blue, worn impression, uncancelled on folded letter datelined Jan. 23, 1861, carried privately and mailed at British P.O. ISLAY (cds of JA 24 on back), carried to Panama (Feb. 6 transit), then carried to New York where Steamship / 10 was applied. Note « PAID TO PANAMA » hs and red ms 6d for British postage to there, docketed received on Feb. 26, an exceptional postal history showpiece, very fine