I have this Bottecchia Columbus TSX frame which I think dates from the late 80's. It looks like its an anniversary/special edition frame but I just do not have any real knowledge of retro road bikes. It is in good condition but I have ridden fat tyres all my life and would like an idea of value before I put it up for sale. Any help would be appreciated. There were also components which I have taken off it which I may post pictures of later as I would appreciate an idea of value of these as well. Here are some pics, apologies for the poor camera work!