I am looking at purchasing a bass estimated (by the seller) to be 40 to 60 years old. On the inside, on the back under the right (E-side) f-hole is a tag which reads: Made Expressly For William Lewis and Son Chicago, Illinois In Germany On the left side of this tag is a round picture (drawing really) of the top of a bass (scroll to about 1st position), and under that it says "NO.______" and the number 236 is hand written. This is a carved bass, round back. The purfling appears to be real, not painted. Questions: What is the age of the bass? Who made it for William Lewis and Sons? Is the number 236 a model number or a serial number? I've searched TalkBass, I've Googled, I've asked my family (who still live in Chicago and knew the last owner of Kay before they went belly-up and sold to Englehardt). Still very little knowledge about the bass in question. If I am going to own this sweet thing, it would be fun to know its history (and may also help us figure out if its really worth $6,500). Any help appreciated!