| Event | GWB |
|---|---|
| Narrative | George Washington Brithday Postmark #1: Mount Vernon, VA — 2012-02-22 Stamp: Liberty Ship, Forever (Scott #4550) |
| Cachet Sponsor | GWMSC |
| Design | Pictorial |
| Scott # | 4550 |
| Stock # | G-12-003 |
| Postmark Type | Special |
| Location | Mount Vernon, VA |
| Owner | GWMSC |