1918-40, the fine exhibition collection with the emphasis on Waterlow and Sons "SPECIMEN" stamps which include sheetlets (3x3) in unissued colours of 1918-24 ¼c. black and blue, 2½c. black and carmine, 5c. black and yellow, 7½c. green and carmine, 8c. black and green, 20c. black and brown, 30c. green and purple and 50c. black and blue, 1923-24 80c. imperf die proof, 1935 Air colour trials (7), 1937 imperf. values (10) to 10E. and perf. values (17) in unissued colours and perf. values (12) to 10E. in issued colours. A splendid assembly. (few hundred)