Unbound in a clamp strip
Maritime Mail 1815-1868
detailed descriptions and evaluations
Airmail issue individually and as a block of four 'upside down'
field post WWII etc
Schäfer, Richard: Schweizer Bundesmarken 1850 - 1854, Durheim Ausg ... Condition:New Unbound in a clamp stripSchfer, Richard: Swiss Federal Stamps 1850 1854, Durheim Issues, Franking Rarities, Corinphila Auctions, Zurich, 2018, all issues are systematically documented according to the occasion and historical background of the stamp issue, edition, frequency and types of use, franking and rarities, Swiss Federal Post Office constitutional principles and tariffs, local post and Poste Locale, blue, yellow and red rayon stamps, cancellations, foreign postal