1927-45 Pictorials colour trial proofs in unissued colours with 'HARRISON's SPECIMEN' opt: 'Dome on the Rock' 4m grey-green (instead of rose-pink), 'Rachel's Tomb' 10m blue (instead of slate) & 'Sea Of Galilee' 90m bright blue (instead of bistre). VF fresh MNH. Bale T92, T97 & T101 cat US$4500 for M, so should be at least double, US$9000 MNH. Only 1 sheet of each existed. 2019 Ceremuga photo certs. (3) (P)