This is Tenyo's "Sun & Moon Tube." A 100-yen coin turns into water inside the tube. When the water is poured into another tube, the water magically transforms back into a 100-yen coin. Since you can mark the 100-yen coin with a sticker or something similar, it's possible to perform the trick without any coin switching. This product is brand new and unopened. It's a rare item as it's not often found on the market. How about it, collectors and Tenyo fans? The following was created by AI: Magic prop where a coin dissolves into water, visually entertaining! - Product Name: Sun & Moon Tube - Year: 2003 - Description: Magic prop where a coin dissolves into water... and then returns to its original state. - How to Use: Place a 100-yen coin in the container, pour it into water, and the coin disappears! - Features: Visually enjoyable magic goods Thank you for looking.