{4} imperf. Nice. See photo. Starting to sell my stamps to travel light in old age, sorry to see this one go but someone can enjoy. I think CP PA10a(z) CV$1500. Has a horizontal pink colour shift so that suggests horizontal printing direction.

I've upgraded the photo. In the initial photo the block of stamps had begun to curl while being photographed. The current photo is taken looking through the cellophane envelope. The white mark at upper left is on the cellophane not on the stamp. Slight curvature is distortion of the camera lens. My computer scanner is not working right now. Item is in pristine condition.

Check 'seller's other listings' for other items.