I don't have pics, but welds are nice. No serial #. Brake bridge stamped on both sides-lightly, not Taiwan style. 18" top tube center to center. Oh yeah, Chrome. No forks.
I had one I raced as 16X but don't recall the measurements. I don't remember it having such a short TT but I didd run a layback post even at 16.
Someone tell me if this is Pro or Expert.
I am 99% sure it is US made.

I'd say Expert. Pro has a longer top tube.

expert for sure and it its stamped on both sides of the brake bridge.....its a keeper.