1842 TURNED LETTER/DIFFERENT PLATES 17 (BI) AND 18 (JE) (SG8). Letter Aberdeen to Fyvie with 1d pl.18 lettered JE, just touched at lower right tied fine Aberdeen M.C. and back stamped ABERDEEN MR 24 1842. Stamp shows fine SQUARE J and wrapper with attractive part printed address panel. Cover turned and re-used to Oldfield, Thurso with a fine 1d pl.17 lettered BI, with four close to good margins tied superb black M.C. BI in state I. Back stamped FYVIE MR 25 1842. Some soiling but a most unusual usage. (Ref 103605).