Are there any markings on the bottom? There are a wide variety of violin shaped bottles, of all ages. In my experience, the most common or popular color appears to be cobalt blue. Maryland Glass Co. made some, and there are some Wheatons also. I have a Wheaton of a deep aqua blue, and they also make a lot of amber bottles in their popular shapes. The Wheatons are generally fitted with a cork stopper. It would be nice to see a picture.