Almost all coins to glass effects require the gimmick to be hidden in a card case. Here is the Cesaral version of coins to glass (CCP) We debuted it at Magic Live 2018 however we only had the prototype. Now we have the production for the USA model and I love it. I don’t explain very clearly about the effect in the video but 3 different coins (nickel, quarter and 1/2 dollar) can be made to disappear and appear in the glass and they can be in any order. For demo purposes I only made the 1/2 dollar vanish and appear but as I mention all 3 coins and in any order can be made to vanish and appear.
https://youtu.be/yj8E_-2Z1Q8