I say this with my tongue firmly in my cheek, but the A Seven clubs should have a publication showing the increase in value of various bits which are, "believed", "thought to be" and "purported". No doubt a computer algorithm could be written to make the system work. It would be even more complicated if the purported springs of an Ulster were combined with "once looked at by Arthur Waite" to "worked on by Arthur Waite" to "on a car driven by Arthur Waite".

Location: Sunny Seattle