Let's start with the kokshnik. It was in use 1899-1908. The assayer is Cyrillic AP. He is the very well known Aleksandr Romanov. This time he is assaying in Warsaw 1899-1904. Why I know he is in Warsaw is that the star of David tells me that. It is the trade mark to master Kazimierez Bierkowski (KB), active in Warsaw around the turn of the century ~1890~1930.