The first is a 'common' 5 kopecks, 1770, most probably a EM (Ekaterinenburg mint), look the other side and read the letters printed. it looks quite well preserved.
the second one, i really doubt it is original, but if it is, you are really a lucky man buddy, this is a 5 kopecks of special issues in copper, squared .
i cannot see clearly the pictures, but look at the chest of the eagle, you can find the emblme of moscow or not. In both cases, the coin is an excessively rare one !
best compliment, if ... really original,
giuseppe