1905-06 Perforation 11½x11 3f. brown Retouch to 'E' of 'HELVETIA', Zumstein 92A,

marginal block of 4 from the top of the sheet, both the lower stamps with the major retouch to the 'E' of 'HEVETIA', well-centred, exceptional colour, the stamps are unmounted original gum. A RARE PRISTINE POSITIONAL MINT MULTIPLE WITH THE MAJOR RETOUCH. Emil Rellstab Certificate 1980 (8426)