3d. on 30pfg. black and orange/buff, block of four, fresh color and good perforation, positions 8-9, used with Gibbs Type 2 straight-line "RABAUL Oct. 17 1914", upper right one slightly pulled perf and tiny shallow thin, otherwise a very fine and attractive multiple, certificate BPA
Reference: depicted in G.R.I. by Robert M. Gibbs, page 68
