Britain. Michel 4a used, 1841 Queen Victoria, with line under Postage 2 d blue, watermark small crown. A most unusual block of 6 of the 1841 2d blue, on piece, all used with neat '21' in oval pmks and corresponding Andover double circle cds, lightly to upper left. There are a few small faults, nevertheless as a used multiple of 6, this is highly unusual and scarce. Cat as single stamps only at £660 SG #15, this is however as amultiple many times scarcer than that due to its rarity in this block format.