What makes a Swiss 5-rappen blue stamp sold by Koehler unusual? – Linn’s Stamp News
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What makes a Swiss 5-rappen blue stamp sold by Koehler unusual?
Linn’s Stamp News 21-24, Heinrich Koehler Auctions held a sale of worldwide stamps and covers at the headquarters in Wiesbaden, Germany. The firm is part of the Global Philatelic Network that includes Corinphila, H.R. Harmer and John Bull. One of the more unusual items … |
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