| ID | 725 |
| Thumbnail | |
| Cat Number | 1399 |
| Variety | v |
| Description | Dr. Elizabeth Blackwell, 1st Woman Doctor |
| Series | Regular Issue 1970-74 |
| Denomination | 18ยข |
| Color | Violet |
| Separation Method | PF |
| Extent Perf Die Cut | 4 |
| HPerf | 11.00 |
| VPerf | 10.50 |
| Tagging | Overall |
| Tagging Color | |
| Paper Type | NF |
| Adhesive | WA |
| Gum Type | S |
| Format | S |
| EFO | |
| Watermark | unw. |
| Specialfeatures | paper gray with traces of luminescent threads under LW |
| Printing Type | Rotary Press |
| Stamp Date | ---- |
| Printer Engraver | |
| Issue Year | 1974 |
| Image1 | |
| Issue Date | 1/23/1974 |
| Quantity Issued | |
| Visible | Yes |