Hi, folks. I'm new here... I have been playing electric bass since I turned 50 (14 years) but recently acquired an upright bass. There are no identifying marks on it that I can find, but I'm wondering if anyone can give me any idea how to determine its age or perhaps its maker. I attached a picture of the headstock, but I can easily attach other pics, I just don't know what is necessary for the purpose. Any advice is greatly appreciated.