1902, Diego-Suarez stamp 30cts brown overprinted, superb vertical strip of three stamps with three different types se-tenant either Y&T No. 59, No. 59b misplaced comma variety and No. 61 "big zeros", No. 59b in the centre of the strip is mint ** MNH, the other two stamps are mint *, signed Scheller, the Yvert and Maury catalogues do not mention such a combination, so it is probably a unique piece! EXCELLENT CONDITION.