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| 正面描述 | Left panel carries a ruled rectangular frame with vertical stripe underprint, bearing the issuing country name CANADA in red and denomination 22 CENTS in blue, followed by bilingual exchange instructions in French and English. Right panel contains two large circular stamp-impression vignettes above and below a control box, with UNION POSTALE UNIVERSELLE running vertically on both lateral borders and COUPON-RÉPONSE INTERNATIONAL along the lower frame. |
|---|---|
| 正面铭文 | 登录 以查看详情 |
| 背面描述 | Plain light-blue ground carries the UPU exchange instructions printed in six languages arranged in successive text blocks: German, English, Arabic, Chinese (traditional characters), Spanish, and Russian, all in uniform blue letterpress type without additional vignettes or ornamental borders. |
| 背面铭文 | 登录 以查看详情 |
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| 防伪类型 | 登录 以查看详情 |
| 防伪描述 | 登录 以查看详情 |
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International Reply Coupons occupy an odd corner of postal history — not quite stamps, not quite banknotes, but exchangeable instruments governed by the Universal Postal Union since 1906. The 22-cent Canadian issue reflects a specific UPU rate period; Canada Post periodically withdrew and replaced IRC series as surface and airmail rates shifted, making dated or rate-specific examples genuinely useful for pinpointing postal tariff chronology.
IRCs are redeemable at any UPU member post office for stamps equivalent to the minimum rate for an unregistered airmail letter — a mechanism designed to let senders prepay return postage internationally without handling foreign currency.