1926-27 Pretoria Typo's 1d IMPERF COLOUR TRIAL/PLATE PROOF: VF left marginal BLOCK OF FOUR in unissued colours of green & orange on unwatermarked thin wove paper. Light horizontal bend mentioned for accuracy not detracting from gorgeous appearance. A superior example of this the most delicate of these various trial printings. Scarce, most attractive, lovely as multiple.
