I recently bought a used lugged steel custom Ken Merrick road frame, and the seller told me a little about the history of it, and that Merrick was involved with the Schwinn Paramount factory as well as with building custom frames under his own moniker. I was wondering if anyone knew anything else about his frames, such as the type of tubing that may have been used and the possible years it may have been made during. Dating from the components is difficult because the previous owner install a lot of upgrades and I don't know what is original and what isn't (well, I know a lot of what is definitely NOT original...).