Sc.239, 1937 Bratislava exhibition, 19 souvenir sheets + Sc.239a/b (stamps of the sheet in gutter pairs) x 25, all MNH and of very fine quality, catalog value US$87+, good opportunity! (Image)

1939, 2 Sheets Sc.P26 with green and gold overprints commemorating the New York world's fair, each one in its original folder, MNH, excellent quality! (Image)

1939, 2 Sheets Sc.239 with blue and gold overprints commemorating the New York world's fair, MNH, very fine quality! (Image)