Gruen GR90005L Ladies Watch

I don't know a lot about this watch, except that Gruen was the original Cincinnati Watch Company. The Gruen Watch Company was formerly one of the largest watch manufacturers in the United States. It was in business from about 1894 to 1958 and was based in Cincinnati, Ohio. It was founded in 1894 by German-born watchmaker Dietrich Grün, who changed the spelling of his name to "Gruen" because the letter ü does not exist in English. This watch is vintage, and in beautiful condition. Its model is PC21, which I believe to ne 21 jewel, but not 100% sure of that. It has 26 crystals on the bezel and 12 on the cloth band. It has a Japan quartz movement with a new battery.