Lot 798
1710, "PERNAU" superb strike the ribbon postmark on small folded letter sheet addressed to (Matthias) from Porten, one of the rarities of Swedish and Baltic postal history, certificate Obermüller-Wilen BPP (1999)
Matthias von Porten, Swedish governor of Reval in the years 1690-1700 and economic director from 1691 until the end of Swedish rule
