Details
cover 1867 3s. green and 10s. blue horizontal pair, affixed to 1868 (10 April) E. to Italy (17.4 arrival backstamp) and cancelled in transit by "1" in three concentric circles of Vienna, reverse with Vienna and Udine-Verona T.P.O. c.d.s. Photo
Further details
Illustrated on Page 718 of the Handbook.