| Thumbnail |
 |
| Catalog Number |
3187a |
| Description |
1950's: Polio Vaccine Development |
| Denomination |
33c |
| Color |
intaglio |
| Variety |
A2470a |
| Printer |
AP |
| Years |
1999 |
| Sorter |
4049 |
| Ebaylink |
http://www.ebay.com/csc/United-States/261/i.html?_armrs=1&_from=R40&_pcats=260&LH_Complete=1&LH_Sold=1&_nkw=%233187a+Celebrate&_sop=16 |
| HiRes |
 |
| Type |
Reg |
| Detlink |
https://stampsmarter.org/PNT/watermark/nowatermark.jpg |
| PicDetlink1 |
https://stampsmarter.org/PopupStampId/PB.aspx?ScottNumber=3187a |
| Date Issued |
5/26/1999 |
| Perforation |
11½ |
| Watermark |
Unwatermarked |
| Num Produced |
|
| Paper |
|
| Printtype |
Engraved |
| Gum Type |
Water Activated |
| Series |
Celebrate The Century |