Interesting to see a Proctor on the list - is this a builder in Canada? I once had a room-mate in Edmonton who had one of these, back over 20 years ago now, and I think it was built in Alberta, or somewhere in the west - is this the same Proctor?
All the of the bikes on that list I'd have a hard time giving up, but if you've had your time with them then I guess letting them go is good. I'd keep the Cinelli and the Masi as investments and keep the Colnago or one of the Bianchi's as a rider. If the Proctor is a 57-58 frame...well maybe I shouldn't be tempted.