Free: Contests & Raffles.
Most I have found is 12%.
What do you mean what to do about it? Do you want it off or do you want to keep it?If you want to keep it, good luck. Just be careful.If you want it off you can remove it. Use a wire brush or pick it off. It looks like it will eventually flake off anyway over time.
You mean what could you have done to repair it after it cracked? Nothing really. You could have just left it alone and if it does it does. Is the antler white under all the stuff you removed?