| Event | FDC |
|---|---|
| Narrative | Philadelphia 1774-1974 Independence Postmark #1: Philadelphia, PA — 1974-07-04 Stamp: American Revolution Bicentennial, 10 cent (Block-4) (Scott #1543-1546) Postmark #2: Philadelphia, PA — 1987-09-17 Stamp: Signing of the US Constitution, 22 cents (Scott #2390) |
| Cachet Sponsor | GWMSC |
| Design | Pictorial |
| Scott # | 1543-1546 |
| Stock # | G-74-002 |
| Postmark Type | FDC |
| Location | Philadelphia, PA |
| Owner | GWMSC |