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| Catalog Number | 135a |
| Description | 50th Anniversary of Confederation |
| Denomination | 3c |
| Color | brown |
| Variety | imperf. pair (w/o gum) |
| Date Issued | 09/15/17 |
| Perforation | Imperf. |
| Printer | Engr. |
| Years | 1917 |
| Sorter | 354 |
| Watermark | Unwmk. |
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| Paper | |
| Ebaylink | http://www.ebay.com/csc/Canada/3478/i.html?LH_Complete=1&_armrs=1&_from=R10&_ipg=&_pcats=260&_sop=16&_nkw=135a |
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