Another Lisser...
There is a growing list of Canadian hollow ware manufacturers, many previously unknown. But for Lisser, nothing online or in any old catalogs... Makes one wonder if it wasn't made by one of the other Canadian manufacturers.
Lisser translates from French and means smooth, and clearly they are previous to the common 1960 "made in" ideal. Lisser ghost marks are found on Findlay skillets, and I wonder if Findlay themselves made these skillets, not too many Canadian manufacturers marked their old cast "Made in Canada" or "Canada" but Findlay did.