“The Titan Bitcoin” produced in 2014 and sold in batches of 100. If the owner spent the one bitcoin that came pre-loaded on the coin, they would still be left with one ounce of .999 gold.

https://www.coinworld.com/news/paper-money/bitcoin-coin-world-virtual-currency-titan-bitcoin-casascius-physical-bitcoin-numismatics-coin-collecting.html

Found on Reddit.