| Event | SE |
|---|---|
| Narrative | 50th Anniversary pf the USPS Philatelic Agency Postmark #1: Washington, DC — 1971-12-01 Stamp: U.S. Postal Service Emblem, 8 cents (Scott #1396) |
| Cachet Sponsor | GWMSC |
| Design | Pictorial |
| Scott # | 1396 |
| Stock # | G-71-005 |
| Postmark Type | Special |
| Location | Washington, DC |
| Owner | GWMSC |