Interesting details...the "club" piercing looks more like a cross in the lugs, and different on the seatpost, still no piercing exactly like any I've seen before. Rear cluster treatment is not Colnago looking, and the pinch bolt threaded into one side I've heard called a "Dutch" style, though I've seen it mostly on British bikes. Last odd clue is what looks like narrow "Reynolds" style fork blades and a "Vagner" or "Wagner" style fork crown...if it's not a replacement fork, I'd look for signs of 531 tubing...