Ww2 German tunic

I really have no information on this uniform. As you can see in the pictures it passes the black light test , it appears to have had collar tabs and a cuff title at some point , it is wool and is a blue / black color , buttons are marked olc overhoff & C M 201/2 and another marking i cannot make out. The jacket does have soiling on the inside sleeves one button is missing and a small hole on the upper left sleeve. The item "Ww2 German tunic" is in sale since Monday, October 05, 2015. This item is in the category "Collectibles\Militaria\WW II (1939-45)\Reproductions\Germany".