Public Auction 281 Thursday, 20th October, 2011

3844 1913 Aarau 50c semi-official airmail stamp on colour PPC for flight, also franked 5c green, both tied by special cds dated "6 IV 13". VF. Mi I cat €600 as loose stamp, Zum I cat SFr1100 on cover (P) $350 $500

3845 1913 Basel 50c semi-official airmail stamp on UPU Anniv 10c Postcard uprated 2c(3) & 3c(2), all tied by special cds dated "9 III 13". VF. Mi II cat €400 as loose stamp, Zum II cat SFr650 on cover. Attractive & rare franking (P) $300 $450

3846 1913 Bern 50c semi-official airmail stamp on PPC of pilot Oskar Bider & his plane, also franked 5c green, both tied by special violet cds dated "30 III 13". Superb. Zum III. Mi III cat €100 as loose stamp. (P) $130 $180