The Seibu Railway 5000 series, introduced in 1969 to coincide with the opening of the Seibu Chichibu Line, is a dedicated limited express train featuring reserved seating. It received the Blue Ribbon Award from the Japan Railfan Club in 1970. Fondly known as the "Red Arrow," this train operated on routes connecting Ikebukuro and Seibu-Shinjuku to Seibu-Chichibu, such as "Chichibu" and "Oku-Chichibu," as well as "Musashi," connecting Ikebukuro and Hannō. Initially composed of four cars, it expanded to a six-car configuration between 1974 and 1976, enhancing its operations. In 1993, it was succeeded by the 10000 series, leading to its retirement in 1995.
To celebrate the 55th anniversary of the Seibu Chichibu Line, the original "Red Arrow" 5000 series is being reintroduced in a new car number format. Enjoy recreating the past scenery of the Seibu Line along with the simultaneously released products like the Seibu Railway 101 series (early type) in new colors and the Seibu E851 Cement Train.
- A six-car set featuring illuminated name boards is reproduced in the late 1970s specification.
- Accurately reproduces distinctive front designs including stainless deco bands and company emblems.
- Equipped with head/tail lights and transit display lights, featuring an on/off switch.
- The front cars are equipped with body-mounted KATO close-couplers with hooks. The middle cars feature bogie-mounted KATO close-couplers with jumper tubes.
- The illuminated name board comes standard with "Chichibu" and includes "Oku-Chichibu" and "Musashi" replacements. Printed vehicle numbers and car numbers are included.
- Early version name boards are also included for replacement and feature a light-shielding design. Customizable to recreate the "Chichibu," "Oku-Chichibu," and "Musashi" designs as signboards.
- The trailing car bogie is fitted with a waste processing device to match the toilet location.
- Compatible with interior lighting kit Kato11-211 (11-212)
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