Presidential Food Service US Navy White House Challenge Coin. Superb condition as pictured. Early version, double thick “hockey puck” style coin. Coin is 1.75 size. Please look carefully at my feedback and you will see the same. To Sign up for my weekly newsletter below to see what new items I have listed! View My Other Items For Sale. Add me to your Favorite Sellers. Item will be packaged CAREFULLY and PROFESSIONALLY.