I am the original owner of this set - it was built around three times, once for this listing.  Each time it was displayed for about a week and then disassembled and stored back in the dark - no light, dust or smoke.  Even the windscreen is like new and scratch free.  I verified inventory after disassembly to ensure 100% completeness.  The minifigs were likewise kept disassembled and have no playwear.  You can't get a much cleaner version of this set short of BNIB.  The only thing missing is the box.