What is the rarest Tomy/Plarail/TrackMaster item you own?

It might be a consideration if it has still has the original packaging, product name sticker, and the 3 accessories: 2 blue dolls, yellow shop and yellow signal lights. Still not as rare as the other considerations I posted way above. I got that one very recently and thanks to that I was able to confirm that the actual manufacture date is 1972 from the ST mark.