What times change but the money doesn't

I just purchased a 1913 Aluminum one centavo leper coin that has corrosion. How do you at a minimum stop/neutralize the corrosion. The coin is in great detail but had been corroded by the Leper's sanitation. The coins had to be cleaned to get rid of leprosy as part of the disease prevention methods. How times have changed. Now we only clean coins because.... we do.