| Thumbnail |
 |
| Catalog Number |
1012 |
| Description |
Centennial of  Engineering |
| Denomination |
3c |
| Color |
blue violet |
| Variety |
|
| Printer |
Bureau of Printing and Engraving |
| Years |
1952 |
| Sorter |
1087 |
| Ebaylink |
http://www.ebay.com/csc/United-States/261/i.html?_armrs=1&_from=R40&_pcats=260&LH_Complete=1&LH_Sold=1&_nkw=%231012+Engineering&_sop=16 |
| HiRes |
 |
| Type |
Reg |
| Detlink |
https://stampsmarter.org/PNT/watermark/nowatermark.jpg |
| PicDetlink1 |
https://stampsmarter.org/PopupStampId/PB.aspx?ScottNumber=1012 |
| Date Issued |
9/6/1952 |
| Perforation |
11x10½ |
| Watermark |
Unwatermarked |
| Num Produced |
113,860,000 |
| Paper |
|
| Printtype |
Rotary Press |
| Gum Type |
Water Activated |
| Series |
|