Russian locomotive class O

The Russian steam locomotive class O (from Russian: Основной) was an early type of Russian steam locomotives. Between 1890 and 1928, 9129 locomotives were built; hence it was second most numerous locomotive class in Russia, after E class, what was unique number also in the world's scale.

Russian locomotive class O

The Russian steam locomotive class O (from Russian: Основной) was an early type of Russian steam locomotives. Between 1890 and 1928, 9129 locomotives were built; hence it was second most numerous locomotive class in Russia, after E class, what was unique number also in the world's scale.