RIGA (Latvia): 10 kopeck brown and blue, good to large margins, tied by clear dotted numeral "38" to letter sheet to Libau with reverse side dispatch mark "RIGA 9 SEP. 1858". Some minor staining, otherwise very fine and attractive. 1 of just 2 entires recorded with this cancellation. Certificates Eisold (2001), Mandrovsky (2003) and Buchsbayew (2016)
