Finland Åland. Prephilately. Nice small and rare letter by Swedish Royal Mail,dated Stockholm May 31, 1803 to Castellholm, Åland with listing number "10". Cancel "STOCKHOLM", straight line type 11. Full written content to the head of County Eric Taxell. Letter in the first weight class. Earliest recorded letter (not in archive's) to Åland from today's Sweden, according to our knowledge. Fine quality!