| Thumbnail |
 |
| Catalog Number |
C23 |
| Description |
Century of Progress |
| Denomination |
6c |
| Color |
deep blue and carmine |
| Variety |
Single Stamp |
| Printer |
Bureau of Printing and Engraving |
| Years |
1938 |
| Sorter |
7316 |
| Ebaylink |
http://www.ebay.com/csc/United-States/261/i.html?_armrs=1&_from=R40&_pcats=260&LH_Complete=1&LH_Sold=1&_nkw=%23C23+Progress&_sop=16 |
| HiRes |
 |
| Type |
AIR |
| Detlink |
https://stampsmarter.org/PNT/watermark/nowatermark.jpg |
| PicDetlink1 |
https://stampsmarter.org/PopupStampId/PB.aspx?ScottNumber=C23 |
| Date Issued |
5/14/1938 |
| Perforation |
11 |
| Watermark |
Unwatermarked |
| Num Produced |
|
| Paper |
|
| Printtype |
Flat Plate |
| Gum Type |
Water Adhesive |
| Series |
|