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Postcard illustrating postal scales used to weigh mail in Canadian post offices, with bilingual text in English and French. The reverse notes that these scales are preserved at the Canadian Museum of Civilization and that the equal-arm balance type was standard in small post offices between the end of the 19th century and mid-20th century. The sender's address is in Oakville, Ontario, and the recipient's in Toronto, with a Canada 40 stamp and a cancellation from Halton and Peel, Ontario, dated September 11, 1991.