TIKHVIN: 1869-1902, a fine and valuable collection (240) including 1869 5k. black, tiny faults otherwise fine (S.4; RR: 11 known), 1871-72 5k. dull red (78, including a vertical strip of four) and 5k. blue (S.7; R: 17 known), 1874 5k. blue (20, with a block (5x3) showing all types) and a good representation including a few plate proofs and two fine covers