| Event | IDC |
|---|---|
| Narrative | Inauguration - Obama & Biden Postmark #1: Washington, DC — 2009-01-20 Stamp: Flag at Night, 42 cents (Scott #4129) |
| Cachet Sponsor | GWMSC |
| Design | Pictorial |
| Scott # | 4129 |
| Stock # | G-09-008 |
| Postmark Type | IDC |
| Location | Washington, DC |
| Owner | GWMSC |