Milk glass lamp

This lamp is a little over three feet tall including the shade( the shade did not come with the lamp). I purchased it in an antique shop about thirty years ago. It is white milk glass with the grape cluster and grape leaf design with brass fittings. It is probably my most favorite piece. I have no idea how old it is or what it's value is, nor have I ever seen another like it in all the years I have had it. I surf online from time to time looking for another. If you know of one or have one I would love to know anything you know about it.