Until now, we have seen the brown D-51 single train box, but the blue box is not recorded and I have forgotten to place it here.
This is in front of our Taizen book booth in Comiket, and this is the only known source of such a D-51. Our team made full efforts together to bid on this one, ending at around 30000 yen. This box is the 4th generation box, 1978-1980 only, 4th generation is said to be the hardest box to find out of all the listed 6 generations.
Again as usual about the D-51, the train is not valuable, but this time the box carries 99.5% of the entire value.
Other known blue single item boxes in this generation are Underground Train, DD-51, Oufuku EF-66, Shindai Express, EF-58 (turquoise due to discolouration?).
![[Image: EBwv-Enl-UEAYedo-Z.jpg]](https://i.postimg.cc/jDTGM5Tg/EBwv-Enl-UEAYedo-Z.jpg)
1000 yen per book, not per train