Hopping Half Recommendation

Hey everyone, lately I've been messing around with my street magic kit, and with the Hopping Half, when I show the coins (one copper and one silver), everyone says to me, "Isn't one thicker than the other?"

I've done this for a couple of family members, and they've all said the same thing. So when I finish, they tell me, "The one that was thick is the same now; it must have had a layer of something on it."

I'm asking this to find out how you guys present it. I try to downplay it by giving the coins a couple of spins so they see they're normal. Since they're not everyday coins, they assume they're gimmicked somehow. I hope someone can help me by telling me how you present it or something similar.

Thanks a lot, and best regards!