Take a piece of felt and a bit of pasta GOI. Apply the paste on the felt and start active movements to Polish the badge. This method is perhaps the best option to bring back the original kind of army badge. But if it has deep scratches, toothpaste is better not to use because it is clogged and will give a greenish color to the product.
Try to clear the plaque and with the help of toothpaste or powder. Apply a small amount of paste to moistened toothbrush and thoroughly scrub the product. Then rinse in cool water and dry with a soft cloth.
Mix hydrogen peroxide in a ratio of 50/50 with water, add some ammonia and soak in the resulting solution for a badge. Wait for about 7-12 hours, then just clean the metal with a sponge or toothbrush and rinse under running water.
Use for treatment of plaque jewelry. Buy it in the store. Pour into a small container just the right amount of liquid and put it in the plate for 5-10 minutes. After that, you will notice that she began to Shine like new without much effort.
Boil the potato and pull it out of the water. In the resulting broth, immerse the plate and simmer for about 30 minutes. After which she will again be clean and shiny. Similarly, it is possible to boil the product and in the citric acid solution (2 bags 300 ml boiling water), but be careful not to let water run out from the tank, as it will begin to foam.
Give army badge to the jewelry shop. Master for a nominal fee will cleanse it from plaque. But if after cleaning it is quickly dims and darkens, so in metal a lot of microcracks. In this case, it is easier to replace.