i have a vintage dura ace group that im trying to sell and im wondering what would be the best way to do so. The group is of the vintage that had index downtube shifting, single pivot brakes, wobler tubular rims, etc. The group has everyting but the headset even down to the areo stem and post. It came on a pink/purple and green frame that is a rahleigh professional. Renolds 531, rahleigh stamped dropouts so on. anyone who has experience in the field please advise is much needed.