| ID | 8671 |
| Thumbnail | |
| Cat Number | C94a |
| Variety | |
| Description | Octave Chanute |
| Series | Airmail |
| Denomination | 21ยข |
| Color | Blue & Multicolored |
| Separation Method | PF |
| Extent Perf Die Cut | |
| HPerf | 11.00 |
| VPerf | 11.00 |
| Tagging | Overall |
| Tagging Color | |
| Paper Type | DF |
| Adhesive | WA |
| Gum Type | S |
| Format | S |
| EFO | |
| Watermark | unw. |
| Specialfeatures | vertical Pair; paper gray under LW |
| Printing Type | Lithographed, Intaglio |
| Stamp Date | ---- |
| Printer Engraver | |
| Issue Year | 1979 |
| Image1 | |
| Issue Date | 3/29/1979 |
| Quantity Issued | |
| Visible | Yes |