coin processing

This is one of the modern studies for purifying the surface of coins from impurities without affecting the coin's intrinsic value. It is a scientific study that differs entirely from the cleaning and polishing process, which damages the coin's surface and diminishes its value. The presentation outlines the most important stages of the treatment process: 1. The original coin; 2. Degreasing and removing dirt; 3. Surface purification; 4. Microscopic surface purification and final shaping of the coin.1