1895, Mulitas issue, 1c-10p, trial complete set of 12, issued for presentation purposes to UPU , but rejected, because was produced in unissued colors, usual original yellow gum, three stamps w/o gum, including 1p, F/VF and very scarce, Est. $250-$300 (Image)

1934, National University issue, 5c-10p, complete set of nine and Postal Tax stamp of 1c brownish orange, nice and well centered unit, all with full OG, close to VF, C.v. $3,430, Est. $1,000-$1,500 (Image)

Air Post stamps. 1934, National University issue, 20c-20p, complete set of eight, nicely centered and very fresh, full OG (30c has redistributed gum), NH, VF and scarce in such condition, C.v. $4,750, Est. $1,500-$2,000 (Image)