| Pic Thblink | |
| Catalog Number | 156a |
| Description | Cantilever Bridge, Quebec |
| Denomination | 12c |
| Color | slate black |
| Variety | imperf. pair |
| Date Issued | 01/08/29 |
| Perforation | Imperf. |
| Printer | Engr. |
| Years | 1929 |
| Sorter | 437 |
| Watermark | Unwmk. |
| Series | |
| Paper | |
| Ebaylink | http://www.ebay.com/csc/Canada/3478/i.html?LH_Complete=1&_armrs=1&_from=R10&_ipg=&_pcats=260&_sop=16&_nkw=156a |
| Pic Detlink | |