Some interesting replies but it won't stop it happening and IMO I'm of the school that you buy on condition not originality,I personally couldn't care less if it's a 1.1 mint shell with Rs bits on it and a logbook to match rather than a historically correct crock of shite 1987 rotten Rs.
Each to their own though and I stand by my statement above,the Internet forgives it's favourites and villifies unknowns.
Say fuck all and get it done!!!!