Lisbon Geography Society 1935-36 coat of arms with Cross of Christ. Collection sheet nº 123. Lot consisting of 1 magnificent collection sheet with 2 unique pieces: the largest known block of Mf#SGL18A, corner of the sheet (1 stamp with a hinge sign) + only known letter with the circulated stamp, in both cases the stamp with the white background. Ex. Elder Correia.
