It's actually slightly larger now, but not by much. The standard Campbell's condensed soup can is currently 10 3/4 oz. A magazine ad[1] in 1977 showed the size

It's actually slightly larger now, but not by much. The standard Campbell's condensed soup can is currently 10 3/4 oz. A magazine ad[1] in 1977 showed the size as 10 1/2 oz. And that's been the size as far back as 1922[2]. That's not to say the other products in the Campbell's brand haven't changed. The "family size" and "Chunky" variations have been reported to change size at times. But the basic can has been a remarkably stable product. [1] https://books.google.com/books?id=18sDAAAAMBAJ&pg=PA37 https://books.google.com/books?id=18sDAAAAMBAJ&pg=PA37 [2] http://www.magazineart.org/main.php/v/ads/foodandbev/soupandstew/Campbell_s+Tomato+Soup+-1922C.jpg.html http://www.magazineart.org/main.php/v/ads/foodandbev/soupand...