|
| Canal Zone #135 Aug. 15, 1939 FDC Balboa, CZ | $ 2.95 |
| 1931 USS GILMER - BALBOA, CANAL ZONE | $ 0.99 |
| Balboa Canal Zone Paquebot Undated Machine Cancel | $ 5.00 |
| Balboa Canal Zone August 31 1928 Paquebot | $ 4.00 |
| Canal Zone #134 Aug. 15, 1939 FDC Balboa, CZ | $ 2.95 |
| CANAL ZONE 1921 Scott #U2 Entire Ancon to Balboa Hts | $ 5.00 |
| CANAL ZONE 1924 Scott #U6 Entire Balboa to Ancon | $ 5.00 |
| CANAL ZONE 1924 Scott #U7 Entire Balboa Hts to Ancon | $ 5.00 |
| Canal Zone #133 Aug. 15, 1939 FDC Balboa, CZ | $ 2.95 |
| USAT Republic October 28 1940 Balboa Canal Zone | $ 6.00 |
| Canal Zone 1917 Local Balboa Hts Cover on U1 entire | $ 14.00 |
| Canal Zone #132 Aug. 15, 1939 FDC Balboa, CZ | $ 2.95 |
| 1963 Panama Canal Zone Balboa ad cvr 30mm CDS | $ 0.99 |
| 1949 Panama Canal Zone Balboa Hgts 27 mm CDS penalty cv | $ 0.99 |
| 1951 Panama Canal Zone Balboa 30mm CDS | $ 0.99 |
| 1950 Panama Canal Zone Balboa 30mm AMF CDS | $ 0.99 |
| UNITED STATES CANAL ZONE 1942 CENSORED COVER BALBOA | $ 0.99 |
| Canal Zone #131 Aug. 15, 1939 FDC Balboa, CZ | $ 2.95 |