Proof 1899 imperforate colour trials on unwatermarked paper comprising 3c. (5) in rose (affixed to piece and marked "6 Cents"), rose and brown, pale grey, sage-green and red-brown (affixed to small pieces) and red-brown and black, 4c. (3) in pale yellow, violet and slate, 15c. (3) in bistre and carmine, rose and blue and in blue (the colour of issue - affixed to piece with 1886 issued 25c. below). A fine assembly