17c STALEY STA-FLO STARCH 1-quart bottle

This one actually saved from a trash bag, as Mom was cleaning out her laundry room cabinets. Guessing late 1960's vintage by the label and 17c price written on its lid in black grease-pencil (3c OFF regular price!) it is an otherwise rather heavy glass bottle with nice ridges molded into it above and below the smooth label area on its middle, measuring about 10" tall. There are a few numbers/etc molded into the bottom (not pictured) which might identify the maker of the bottle itself (?) and the remainder of the "liquid starch" still inside it is now most decidedly a chunk of very *solid* pretty blue stuff instead... <lol>