| Event | GWB |
|---|---|
| Narrative | Mount Vernon Postmark #1: Washington, DC — 1975-02-22 Stamp: Dove Weather Vane atop Mount Vernon (Scott #1552) |
| Cachet Sponsor | GWMSC |
| Design | Pictorial |
| Scott # | 1552 |
| Stock # | G-75-001 |
| Postmark Type | Std |
| Location | Washington, DC |
| Owner | GWMSC |