Toei 10-300 Series at Chitose-Karasuyama Railroad Crossing No.4 in January 2023: 7

There is a sticker at an upper corner of the front window that says "10-cars." This was put there to distinguish between 8-car and 10-car trains at one time, but since the last eight-car 10-300 series retired in July 2022, it no longer has much meaning.

Done