Hello New to Russian coins. Bought a group of Russian coins on the internet and have some questions? I have a 1770 5 Kopek at 42.9 grams? I have a 1787 5 Kopek at 45.8 grams? The 1787 date side a little strange. I have a 1796-that the date looks a little strange. Real, fakes or variety? Any help or opinion would be great. Thanks