Dot my dream set 8868 with a box full of surprise!

It looked surprisingly new, with all of the white colored parts are not discolored at all. Another great thing is that it came with the original instruction booklet, which I really miss. Yeah, the previous owner forgot to pull out the batteries, so I had to use lots and lots of Isopropyl Alcohol to clean. Once the cleaning is done, I'll disassemble everything and rebuild! Update: Sorry for the typo! I left the battery box in vinegar for a few hours, after that I gave it a quick rinse and...