| ID | 8733 |
| Thumbnail | |
| Cat Number | C128 |
| Variety | v1 |
| Description | Harriet Quimby, Pilot |
| Series | Airmail |
| Denomination | 50ยข |
| Color | Multicolored |
| Separation Method | PF |
| Extent Perf Die Cut | |
| HPerf | 10.90 |
| VPerf | 11.00 |
| Tagging | Mottled |
| Tagging Color | |
| Paper Type | NF |
| Adhesive | WA |
| Gum Type | S |
| Format | S |
| EFO | |
| Watermark | unw. |
| Specialfeatures | paper gray under LW |
| Printing Type | Photogravure |
| Stamp Date | |
| Printer Engraver | |
| Issue Year | 1991 |
| Image1 | |
| Issue Date | 4/27/1991 |
| Quantity Issued | |
| Visible | Yes |