| ID | 1828 |
| Thumbnail | |
| Cat Number | 1852 |
| Variety | f2 |
| Description | Sylvanus Thayer, Educator |
| Series | Great Americans |
| Denomination | 9ยข |
| Color | Dark Green |
| Separation Method | PF |
| Extent Perf Die Cut | 4 |
| HPerf | 11.00 |
| VPerf | 11.00 |
| Tagging | Small Block |
| Tagging Color | |
| Paper Type | |
| Adhesive | WA |
| Gum Type | D |
| Format | S |
| EFO | F |
| Watermark | unw. |
| Specialfeatures | tagging light & speckled; block shifted somewhat down |
| Printing Type | engraved |
| Stamp Date | ---- |
| Printer Engraver | |
| Issue Year | 1985 |
| Image1 | |
| Issue Date | 6/7/1985 |
| Quantity Issued | |
| Visible | Yes |