375rd Heinrich Köhler auction - Day 1

1875/93, United Kingdom to Greece, three items with Greek postage dues: entire letter from "MANCHESTER 2 JU 75"  to Patras with 1875, 20 l. and 90 l. (instead of "115" in blue crayon), front of an uprated wrapper with 2 copies 1875, 10 l., tied by Athens 4 May 1883 cds. and, underpaid opened out cover from London Ju.17.93 to Athens with 1876/90, 10 l. and 20 l.; 90 l. crease, otherwise fine