When I was 8 years old living in Russia one of my parents' friends brought a 10 pfennig coin from Germany as a souvenir. My parents gave it to me as they obviously had no use for it, and that is how I started collecting coins. First they were European coins but soon afterwards a small side collection of Russian coins developed.
When I moved to the US I stopped and started again a few years after graduating from college. This time my interest was US coins. But not for long.
Thee or so years ago I inherited a small number of 19th century Russian roubles in low grades from a distant relative of mine, I smuggled them out of Russia and that's how my attention turned to Russian coins.
It has become quite an expensive hobby as my brief stint with US coins tought me to aim for mint pieces.