1913 Liestal 50c semi-official airmail. Superb fresh MLH, bottom marginal. Zum VIII cat SFr 800, Mi VIII cat €800. (P) (Image1)

Estimate AU$600

1918 'Industrielle Kreigs Wirtschaft' opt set 3c-30c, thin seriffed opt, used for official departments importing & exporting war materials. VF fresh M. Mi D1-8 cat €900, SG ex O299-307 cat £1216. (8) (P) (Image1)

Estimate AU$500

1918 'Schweizer Post Vaduz' courier stamp, perf 11½ on 3 sides, top imperf as from top of sheet. This special WWI stamp was for mail from Vaduz in Liechtenstein to Sevelen in Switzerland where it was put into the normal mail system. Superb fresh MNH, pristine never hinged original gum. Mi 1B cat €1300 MNH, Zum 1b cat SFr1600. Very rare local post, especially MNH. 2010 Ceremuga-photo cert. (P) (Image1)

Estimate AU$1,200

1918 'Schweizer Post Vaduz' courier stamp perf 11½ on 3 sides, top imperf as from top of sheet. This special WWI stamp was for mail from Vaduz in Liechtenstein to Sevelen in Switzerland where it was put into the normal mail system. VF fresh MLH. Mi 1B cat €700, Zum 1b cat SFr800. Very rare local post. 2017 Ceremuga photo cert. (P) (Image1)

Estimate AU$600