1881-1889 EMPIRE: Octagonal TPO Cancellations of the St.Petersburg Region: Attractive one frame exhibit on 16 pages neatly presented and knowledgeably written up. The is a study of the Sub-Offices octagonal cancellations of the TPO 3 and TPO 4 route between St.Petersburg and Verzhbolovo, these cancellers used serials number 1-7. Their known usage is between 1881 and 1889. Between 1881-1883 cancellers used were during railroad construction and in 1889 the octagonal cancellers were replaced with cross-date circular cancellers with serial numbers, This is a study of the octagonal cancellations used on the TPO 3-4 route from 1881-1899 and arranged by serial number, an excellent basis for study and expansion (29 covers) (Est. € 2’000/3’000)