German Prussia, Lot of 3 Covers, Catalog Value €260 (used stamps)

• 1 Sg. Pre-stamp stationery cover: Affixed with an additional 2 Sg. blue imperforate (Michel No. 11a), tied with a rectangular Bismarck postmark, addressed to Belgrade.
• 4 Pf. Imperf. dark green (Michel No. 9a, Sc. 1a) on a Hamburg commercial cover, dated 1860.
• 1 Sg. Imerf. carmine rose (Michel No. 10a, Scott No. 6a) tied with a 4-ring numeral postmark "1439".