| HONG KONG | 1937 (29 Apr) Pacific Clipper First flight HK - Hawaii trip hand illustrated special cachet. Multifkd env incl values to $1. VF. |
U$ | 150 |
| HONG KONG | 1937 (29 Apr) Pacific Clipper First flight HK - Hawaii trip hand illustrated special cachet. Multifkd env incl values to $1. VF. |
U$ | 150 |