A very rare and authentic Italian Colnago vintage steel mountain bike made in the late eighties or early nineties. Columbus tubing in a octagonal shape for extra strength make up this Colnago Master frame. Excellent condition with no dents or major scratches. All paint and decals are original. Not a restoration or re-paint job. One decal on the seat tube is a little frayed on the edges, but all letters are intact. Frame has been treated with Frame-Saver. Includes vintage Mavic head set, 27.0 size seat post, seat post binder, and a new bottom bracket. Seat tube is 52 cm measured from center of BB to top of top tube. Seat tube is 56cm, measured from center of BB to top of seat post tube. Top tube length is 58cm measured center to center. Head tube is 18.5 cm. This posting is for the frame only. If you are looking for vintage mountain bike parts that I once installed on this bike, we can discuss some options if you are the successful bidder. There are some pictures of the bike completed, but this posting is for the FRAME ONLY.