Strange Puffy or Squatty Rose Goofus Glass Vase

This is a very strange unusual looking piece of glass called goofus glass that is circa 1897 to 1920. It is the squatty, or puffy rose style, and some call it a cabbage rose vase. It is very funky and shabby chic too. It measures 6 inches high and and about 5.25 inches across. The glass has no chips or cracks. I do not know if this is original paint or not. I have searched and saw black paint on some pieces, but I an see tiny glints of old in spots were the black is flaked off. Most of the black paint is still on it, even in the rim. It looks like it has a rooster mark on the bottom of the vase, but hard to make out. This is an auction piece and a bit dirty, I was afraid to wash without knowing how, so it needs a good cleaning.