Specimen SPECIMEN TYPE HK4: 2c., 4c., 6c., 8c., 12c., 24c., both 30c., 48c. and 96c. (the set less 18c.) handstamped "SPECIMEN" type HK4, 6c. and 30c. mauve with handstamp inverted, 12c. toning otherwise good with some gum. (10). Photo