QWORK Coin Holder Keychain, 2 Pack Double-Sided Transparent Coin Display Case for AA Medallions, Challenge Coins, and Recovery Chips - Coin Collection Holder

I have my work keys with me today, but I highly recommend this instead of drilling a hole. I have one for myself and my wife which hold out walking liberty coins. https://www.amazon.com/dp/B0CZMSK63C?ref=ppx_yo2ov_dt_b_fed_asin_title