used  1 dollar on 2m. deep blue variety right star standing on point, good used with Tientsin c.d.s. dated January 1909. Very rare, possibly unique. Certificates from R.P.S. (1947), George Bühler (1982) and Hans Bothe (1983) with additional Köhler guarantee on reverse. Mi. 45AIba, 30,000 Dm.
used 1 dollar on 2m. deep blue variety right star standing on point, good used with Tientsin c.d.s. dated January 1909. Very rare, possibly unique. Certificates from R.P.S. (1947), George Bühler (1982) and Hans Bothe (1983) with additional Köhler guarantee on reverse. Mi. 45AIba, 30,000 Dm.

Details
used 1 dollar on 2m. deep blue variety right star standing on point, good used with Tientsin c.d.s. dated January 1909. Very rare, possibly unique. Certificates from R.P.S. (1947), George Bühler (1982) and Hans Bothe (1983) with additional Köhler guarantee on reverse. Mi. 45AIba, 30,000 Dm.
Further details
For 2½ dollar on 5m. variety left star on point, see lot 1631