Lot 41078 – Serbia 1879 folded letter sheet registered 20pa strip of 5

1879 (15/4) large letter sheet registered to Sabac franked by Prince Milan 20p blue, fifth printing, perf 12 x 11 in a horizontal strip of five, the second stamp of which shows additional vertical row of perfs at left side, cancelled by two Valsevo cds and straight-line registered, the entire has been refolded, two vertical fining crease, a rare multiple on cover