Identifying an old LEGO brick

I hope someone can help me identify this brick.
I guess this is a rather old one, given it is in the old dark gray colour, AND it has no number molded into it. It says C(circle around it) LEGO on the back side, so it's official. I've tried browsing through the catalog, but I've no idea what kind of brick it is, so no luck so far.

Comments

Sign In or Register to comment.