My Colombia Expo "A" has a damascus rib that doe not match the tubes, the extension is steel and I think all extensions were steel. I questioned Oscar on the rib and tubes not matching and he said it was common. If people would think business, saving money, not wasting anything and not pure and perfect Parker then bore varations, fish tail top levers on box locks and all sorts of varations will make sense. They were thrifty Yankee's!

bill