I think we have a problem. All my references say that the Hispano-Suiza K6 was not released until 1934. One reference specifically says August 1, 1934. So either the puzzle car is a '34 (and not "a few years younger" than our '35 estimate), or it isn't a K6. If your reference shows a '31/'32, it is likely a HS26, or Ballot, model, which the K6 replaced.