I always thought the "old saw" was that ..... A pint is a pound the world around ...... which is to say one pint = 16 ounces avoirdupois, which is 454 g/ml/cm3.
Now Jan ... isn't your money metric?
Over here, 1/2 pint is one quarter of a quart (.95L), which in turn is 1/4 of a gallon (3.79L), which brings us to one pound in a pint, two in a quart and eight pounds in a gallon, depending on the specific gravity of the liquid of course. A gallon of gasoline weighs a fair bit less, while a gallon of Mercury weights 13.6 times more .... give or take, depending on temperature.