RUSSIA - Algeria. 1890 certificate of registered letter delivery, franked inside with 3x1k+104K (1889 issue horizontally laid paper) Imperial Eagle, tied by T.P.O. 40 c.d.s. Upon letter was delivered "ORAN 26/DEC/90" c.d.s. was applied on despatch at Algeria and returned to Russia. Reverse shows arrival "BALTISKIY PORT 26. Dec.1890" c.d.s. Very nice example showing the difference between Julian and Gregorian calendar. Very rare postal document and attractive destination correctly franked. (Photo). Est. 400 - 500 CHF.