I am trying to purchase a B15 from my local guitar center. It was a recent trade in, and cannot leave until the 30th, so I know it hasn't been messed with too much. All original tubes, tolex is perfect, original price tag from 1963 is $350, and all stickers, and plates, including the plexi logo are intact. It has the original 15" speaker and the cover, all in perfect operating condition. Some pots are a little scratchy, but the amp is sooooooo warm and full and it works so well... My question is, what would you pay for it? What is it worth? Any one have any spacific information regarding the amp and cab? I searched google, but there is limited information regarding the spacific model year. Anyone have build dates, and specs? Any help would be great. I am going to make an offer tomorrow, and I wanted to get some input from you guys here... Thanks in advance.