51 to 69 of 69
airmail
1930, May 10 11th International Railway Congress issue unwmk p. 14
| - | 25c | bl |
1931, Oct 10 3rd Pan-American Postal Union Congress issue p. 12
| - | 50c | bl | plane over Fuente de Cibeles | — | — |
1935, Jun 1 1935 autogiro issue (no perf info)
| - | 2pta | bl | white sky | — | — | |
| - | 2pta | bl | lines in the sky | — | — |
1938, May 17 1938 air b issue
| - | 1pta | bl | — | — |
1939, Jan 1939 air issue p. 11
| - | 1p | bl | autogiro & Cierva | — | — |
1952, Jul 3 p. 12.75x13
| - | 2p | bl | San Francisco Javier |
postal tax
1950, Dec 22 Pro-tuberculosis issue p. 12.5x12.75
| - | 25c | bl | dove & daisies | — | — |
1953, Oct 1 pro-tuberculosis 1953 issue p. 12.75
| - | 10c | bl | — | — |
semipostal
1926, Sep 15 Red Cross 1926 issue p. 12.5
| - | 2c | bl | ||||
| - | 15c | bl |
1927, May 17 Alfonso XIII coronation 25th issue ovpted
| - | 2c | bl | ovpt | |||
| - | 15c | bl | ovpt |
1938, Feb 10 Historical Monuments issue (no perf info)
| - | 50c | bl | — | — |
1938, Feb 10 Historical Monuments imperf issue
| - | 50c | bl | — | — |
1938, Jul 1 Army and Navy issue
| - | 3c | bl | — | — | ||
| - | 3c | bl | — | — |
1938, Jul 1 Army and Navy imperf issue
| - | 3c | bl | — | — | ||
| - | 3c | bl | — | — |
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