your horse shoe will fall apart if you don't get the salt out of it.Easy way is to remove as much rust as you can,a ball peen hammer will work,a wire brush will take days,and it has to stay wet untill the salt comes out,to get the salt out,get a 1 amp battery charger,hook the ground to the shoe,the positive to a piece of steel,stainless if you can get it,drop in a bucket of water with a spoon full of sodium hydroxide(drain cleaner,lye),put the charger on 6 volts.Look for small bubbles.It is best to wrap wire around your shoe and keep the copper clamps out of the solution.Change the water after the first week and every 3-4 weeks after,cleaning your anode and shoe each time until there is no more sign of action in the tub,somewhere around a year from now.When that is done,clean very thoroughly and dry out,coat with clear satin polyurethane and display proudly.