Proof Specimen -- imperforate 1920 Victory 2½d. purple and blue-green and 3/- blue and grey-green, both overprinted "SPECIMEN", fine. (from the collection of Dr. Conrad Latto)

Details
Proof Specimen -- imperforate 1920 Victory 2½d. purple and blue-green and 3/- blue and grey-green, both overprinted "SPECIMEN", fine. (from the collection of Dr. Conrad Latto)