REVENUES: HOSPITAL INSURANCE STAMPS: 1972-73 20/- Kenya Hospital Insurance: Group of five different IMPERF PROOFS / PASTE-UPS WITH CLEAR ACETATE OVERLAYS over orange or blue machined background each on separate Bradbury Wilkinson presentation cards, some with endorsements (being the Printer and Client examples of the work). The coloured background is printed, the black printing of the value is on the clear overlays. See detail given in photo. VF, attractive. A probably unique group. ^Ex Bradbury Wilkinson archives.