GJ.644I, 1928 35c. of the first airmail issue, block of 4 printed on ENGLISH PAPER, mint, 2 stamps MNH (+50%), excellent quality! (Image)

GJ.651I, 1928 1.08P. of the first airmail issue, block of 4 printed on ENGLISH PAPER, MNH (+50%), excellent quality! (Image)

GJ.642/54, 1928 first airmail issue, the 3 high values in superb blocks of 4, catalog value US$324, good opportunity! (Image)

GJ.845/849, 1940 set of 5 values, 5 COLOR PROOFS of each value (in total 25 different proofs), printed on thick paper of glazed front, perforated, VF quality, rare group! (Image)

GJ.974, 1949 Shooting Championship, 3 COLOR PROOFS in imperforate pairs, the bluish green pair includes one example with VARIETY "small line inside the U of REPUBLICA, resembling a lyre" (position 28, GJ.974a), VF quality! (Image)