| Event | GWB |
|---|---|
| Narrative | GWMSN Logo Postmark #1: Mount Vernon, VA — 1988-02-22 Stamp: Caricature of an Australian Koala and an American Bald Eagle, 22 cents (Scott #2370) |
| Cachet Sponsor | GWMSC |
| Design | Pictorial |
| Scott # | 2370 |
| Stock # | G-88-002 |
| Postmark Type | Special |
| Location | Mount Vernon, VA |
| Owner | GWMSC |