6c Dark Blue & Carmine, Air Post, Vertical Pair, Imperforate Horizontally (C23a). Full top plate no. 21844 and 21836 double "TOP" and arrow block of four, position numbers lightly noted in pencil on gum, Mint N.H. except for a slight gum disturbance at the far top of the selvage above the right stamp, wonderfully fresh, Fine-Very Fine, a scarce error plate block

Image Magnifier / Download

Power Search for Comparables