| Event | GWB |
|---|---|
| Narrative | George Washington, Surveying Postmark #1: Mount Vernon, VA — 1980-02-22 Stamp: Windmill, 15 cents (Scott #1739) |
| Cachet Sponsor | GWMSC |
| Design | Pictorial |
| Scott # | 1739 |
| Stock # | G-80-002c |
| Postmark Type | Special |
| Location | Mount Vernon, VA |
| Owner | GWMSC |