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| Catalog Number | 639a |
| Description | Rural Mail Delivery Block of 6 |
| Denomination | 8 |
| Color | multi. |
| Variety | se-tenant block of 6, (634-639) |
| Date Issued | 06/11/74 |
| Perforation | 13.5x13 |
| Printer | Litho. |
| Years | 1974 |
| Sorter | 1255 |
| 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=639a |
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