1918 'Schweizer Post Vaduz' courier stamp, perf 11½. This special WWI stamp was for mail from Vaduz in Liechtenstein to Sevelen in Switzerland where is was put into the normal mail system. VF fresh MNH. Mi 1A cat €1300, Zum 1a cat SFr1500. Very rare local post, especially MNH. Exp twice, plus 2002 Caffaz photo cert. (P)