These stamps from Canada were on an envelope that had arrived from an Ebay seller.
Issued Apr. 28, 1965
Perf. 12 | Recess printing | No watermark
981 441 5c Red-brown, deep bluish-green and mauve | Prairie Crocus and Arms of Manitoba
[Source: 1997 Stanley Gibbons Stamp Catalogue, Part 1 British Commonwealth, stampworld.com]
Issued May 29, 1980
Perf. 12½ | Litho printing by Ashton Potter | No watermark
979 440 17c Gold and ultramarine | “Helping hand”
[Source: 1997 Stanley Gibbons Stamp Catalogue, Part 1 British Commonwealth, stampworld.com]
Issued Jun. 6, 1980
Perf. 12½ | Litho printing by Ashton Potter | No watermark
981 441 17c Multicolored | Calixa Lavallee (Composer), Adolphe-Basile Routhier (Original Writer) and Robert Stanley Weir (writer of English Version)
[Source: 1997 Stanley Gibbons Stamp Catalogue, Part 1 British Commonwealth, stampworld.com]
Perf. 13×12½ | Se-tenant pair, part of a strip of four | Raymond Bellemare Engraving: British American Bank Note Company, Ottawa | No watermark
1015 454 17c Multicolored | Canada in 1905
1015 454 17c Multicolored | Canada since 1949
[Source: 1997 Stanley Gibbons Stamp Catalogue, Part 1 British Commonwealth, stampworld.com]
Issued Oct. 19, 2010
Perf. 13×13¼ | Issued in souvenir sheet of 5 |Keith Martin Engraving: Cie canadienne des billets de banque | No watermark
2623 7c Multicolored | Large Milkweed bug (Oncopeltus fasciatus)
2625 9c Multicolored | Dogbane Beetle (Chrysocus auratus)
[Source: stampworld.com]