1881 TELEGRAPH 3D COLOUR TRIALS. A very rare set of the three perforated colour trials of the 3d value pl.3, ALL LETTERED CK, in orange, blue and green. Blue with small thin spot otherwise fine with part to large part original gum. These trials originally existed as blocks of 12, which were subsequently split and ONLY 5 SETS ARE IN PRIVATE HANDS, ALTHOUGH A FEW SINGLE EXAMPLES ALSO AVAILABLE. Cat. £4,350. (Ref 103538).