Canadian Precancels perfins
| No. | Town | Firms | Initials | Years | |
| 01. | Detroit | Burroughs Adding Machine Co. (Canada stamps with Windsor precancels) | B (star) | Pic | |
| 02. | Detroit | Gray Motor Co. (Canada stamps with Windsor precancels) | GRAY | Pic | |
| 03. | Wyandotte | J.B. Ford Sales Co. (Canada stamps with Windsor precancels) | JBF/Co | Pic |
Other Canadian precancels perfins see in Canada
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Last update: 2010.11.25
