unused 1926, 5c Dark Blue type B overprint, 'CANAL' inverted (86b), in horizontal pair with normal (pos. 7, 8), L. stamp the variety from the second printing, natural s.e. at T. as always (showing trace of guide line), fresh, full o.g., centered to L., perfs. barely in on L. stamp (the variety), nearly fine, rare, approximately 29 recorded, Scott retail $950.00+ photo