I'm selling a lower unit for an 1973 50 HP Evinrude Lark (50373R).  The gearcase is in working order and has a new water pump and water pump housing installed as well as new seals.  The gearcase will be sold with the necessary hardware as well as a propeller.  The skeg is in good shape for it's age and has the normal wear and tear for a gearcase of this age.