Читать книгу Coin Collecting For Dummies - Neil S. Berman - Страница 67

Each time you breathe, moisture-laden air escapes from your lungs. Each time you speak, tiny droplets of spittle fly from your mouth. Well, imagine what happens to a coin that has been moisturized in this manner. Virtually all the spots you see on copper coins (see Figure 4-9), regardless of the size of the spots, were caused by moisture of some sort. Therefore, when examining an unprotected coin, breathe through your nose, and don’t speak. Most of the time, you won’t have a problem keeping this rule, because nice coins tend to leave you speechless anyway!

FIGURE 4-9: A single spot of moisture can hurt a coin.