377th Auction
20-25 September 2021 in Wiesbaden
1849/50, 60 r. black in horizontal pair, tied to reverse of opened out cover (reverse not quite complete) from Rio Negro via British PO "RIO JANEIRO JU 12 1854", England and Aachen to Goldap in Eastern Prussia, charged "1/- 4 d." in England and "17" groschen at destination; very scarce