I have a vintage Czech roundback bass with violin corners. I'd say made in the 1920-30's. It's a roundback with violin corners and fancy purfling on back under the button. Bass has new Spiro Core strings, a new adjustable Aubert Luxe bridge, and a new fingerboard two inches longer than normal. Email for pictures, bass has strings on it now. There is a soundpost crack on top that was glued and cleated when I got the bass, buyer might need to have a soundpost patch put in at some time, also there has been an expertly done heel repair by luthier Sal Giardina. I'm pricing it at $6500 firm. Bass reminds me of an old Andreas Morelli or Juzek. call Jim outside New Orleans at 504-559-2384 if interested.