Prior to 1961, Canadian beer was sold, and served, in two sizes, colloquially known as "quarts" and "pints", or "large" and "small". They were 22 and 12 imperial fluid ounces (625 and 341 ml), respectively, whereas a true imperial quart was 40 fluid ounces. Over the years, some provinces banned the sale of beer in the larger bottle. For example, in Ontario in the 1950s only the pint could be sold, but in Quebec, both sizes were about equally common. In 1961, both sizes were replaced, nationwide, by the standardized bottle, equal in volume to the "small" and affectionately known as the "stubby". Some years later, however, Ontario (like some other provinces) began to allow the sale of "tall boy" cans containing 740 ml of beer.