| ID | 1231 |
| Thumbnail | |
| Cat Number | 1597a |
| Variety | uf1 |
| Description | Fort McHenry Flag |
| Series | Americana Series |
| Denomination | 15ยข |
| Color | Gray, Dark Blue, Red |
| Separation Method | PF |
| Extent Perf Die Cut | 4 |
| HPerf | 11.20 |
| VPerf | 11.20 |
| Tagging | Small Block |
| Tagging Color | |
| Paper Type | |
| Adhesive | WA |
| Gum Type | S |
| Format | S |
| EFO | F |
| Watermark | unw. |
| Specialfeatures | small block shifted up & outlined with taggant covering remaining portion of stamp |
| Printing Type | engraved |
| Stamp Date | ---- |
| Printer Engraver | |
| Issue Year | 1978 |
| Image1 | |
| Issue Date | 6/30/1978 |
| Quantity Issued | |
| Visible | Yes |