I treat each steel horseshoe with a rust inhibiting process and then I coat the shoes with four thin coats of clear lacquer to further guard against corrosion. However; the shoes should not be displayed out-of-doors, or in a high-humidity environment. If you display your heirloom horseshoe in-doors, it should never rust or corrode. I have clients who have owned their horseshoes for over 15 years with no problems.
If you want an engraved horseshoe to be displayed out-of-doors, I can make a white bronze shoe or an aluminum shoe for you. There is an additional charge for casting a bronze shoe. There is no additional charge for aluminum; however, not all of my designs are conducive to engraving on aluminum. Just contact me by using the contact form if you have any special requirements.