RARE !!!!!!!!!  DC-6/7 second officer's seat; center aisle, fold up, uncomfortable.  Can you believe the poor plumbers that sat on that thing for endless hours.  No recline, barely any padding.  I only had to do it for 45 minutes at a time back in 1966, and loved every minute of it as a new hire at UAL.  The guys before me rode that thing to Hawaii.  Original leather...that's a wrinkle, not a cut.  You'll never find another one...