Poland prepared three cancelers, distinguished by the letters "a", "b", and "c" for the Jubilee Meeting of the Polish Scouts ("Jubileuszowy Zlot Harcerstwa Polskie") at Spala, July 11-25, 1935.  The "a" cancel is seen on the top postcard sent to Keszthely, Hungary.  The "c" cancel is employed on the bottom postcard to Chicago, Illinois.