I need to change the bottom bracket on my 1970s belgian Van Hout frame but the right side cup is stuck of course. I am unsure which way should I attempt to turn the cup since I don't know if it is made of Italian, French, British or Swiss standard. Is there a way of determining?

as I understand Italian and French should open anticlockwise. The shot bottom bracket was a shimano "one key release" 68-116 with markings: "W" , "<52>" and "FC". Probably not original and few years newer than the frame. I know Sheldon has some tips for a handy tool.

Another thing. As I got the frame I serviced the bb and noticed it was pretty worn out. as I opened it again a couple months later the bb area was full of water! There are no drain holes! How can this be?