Thank you very much for viewing my product from among many others. This is a Kato E657 series 10-car set. 10-1639 E657 series "Hitachi/Tokiwa" 6-car basic set 10-1640 E657 series "Hitachi/Tokiwa" 4-car add-on set This is a 10-car set. This is the latest lot released in 2023. It is new and has been kept without being run after purchase. Two instruction manuals and two unused stickers are included. If you have any questions, please comment.