| ID | 8648 |
| Thumbnail | |
| Cat Number | C86b |
| Variety | |
| Description | De Forest Audions |
| Series | Airmail |
| Denomination | 11ยข |
| Color | Multicolored |
| Separation Method | PF |
| Extent Perf Die Cut | 4 |
| HPerf | 11.00 |
| VPerf | 10.50 |
| Tagging | tagging Omitted |
| Tagging Color | |
| Paper Type | |
| Adhesive | WA |
| Gum Type | S |
| Format | S |
| EFO | |
| Watermark | unw. |
| Specialfeatures | |
| Printing Type | Lithographed, Intaglio |
| Stamp Date | ---- |
| Printer Engraver | |
| Issue Year | 1973 |
| Image1 | |
| Issue Date | 7/10/1973 |
| Quantity Issued | |
| Visible | Yes |