375rd Heinrich Köhler auction - Day 1

1866, two folded lettersheets via Lisbonne to Genoa with 1866 Pedro II. two singles 100r. green resp. 20r. violet, both with blue resp. red oval "INSUFICIENTE" alongside, both charged upon arrival with "37" resp. "23" thus postage due applied and tied by cds., postage due with faults, an interesting and attractive duo