Up for Buy-It-Now is a rebuilt master cylinder, Autoline part number 33974.  This item was obtained from an old service garage and is not a newly remanufactured part.  According to my Autoline manual, this is used on the following models and years:

1960-1961 Rambler..w/ standard brakes, W/ 4 stud mounting

   I opened the box for the first time to inspect and take pictures. The master cylinder is in excellent rebuilt condition and is free of any damage.  The housing has some very minor surface rust from many years of shelf storage.  May or may not need a light polishing up before installation.  The rubber boot is soft and flexible and free of any cracks.   Cast on the housing is 5459337, Moraine Products Division, Dayton Ohio. The original Autoline box is in good condition.
  Please feel free to E-mail me questions.  International bidders are always welcome.  Thanks for looking!!!