One new original Bosch brand ignition condenser (2 5/8" wire), part number 1.237.330.047.  This fits:

Mercedes Benz 600 1965 - 1970;  for distributor numbers 0.231.119.004 and 0.231.119.003

Mercedes Benz 300SEL 6.3L 1968 - 1970;  for distributor number 0.231.119.004

Mercedes Benz 300SL 1957 - 1961;  for distributor number 0.231.130.001