Unfortunately, I don’t know the history prior to when my parents bought it, which was probably around 1970, from an antique shop. There aren’t any numbers on the back. I’m attaching a photo of the inside of one of the top drawers. Let me know if you need any other photos. And I do understand that you’re not likely to be able to give me an exact number, given my lack of info. I guess just a range would be helpful. Thanks!