KHARKOV (Ukraine): 10 kopeck brown and blue, horizontal pair, tied by boxed "KHARKOV 4 MAI 1858" to entire letter to St Petersburg, with arrival mark of May 10. This stamp with horizontal filing crease at top and the left stamp with small part missing at upper right, otherwise fine. A rare entire. Just about a dozend No.1 pairs on entire have been recorded and just 2 further No.1 entires exist from Kharkov. Certificate Buchsbayew (2015)
