The is an electric multiple unit (EMU) train type formerly operated by the private railway operator Choshi Electric Railway in Chiba Prefecture, Japan, from 1994 until 2016. The type originally consisted of two single cars, DeHa 1001 and DeHa 1002, converted from former TRTA (now Tokyo Metro) subway 2000 series EMU cars, originally built in 1959 and 1960, and introduced from 29 August 1994 to replace the ageing 100 and 500 series EMU cars. Car 1002 was withdrawn in February 2015, and car 1001 was withdrawn in February 2016. Build details DeHa 1001 was built in November 1960 by Teikoku Sharyo as car 2046 for the TRTA Ginza Line subway (present-day Tokyo Metro Ginza Line) in Tokyo. DeHa 1002 was built in November 1959 by Hitachi as car 2040 for the Honancho Branch of the TRTA Marunouchi Line subway (present-day Tokyo Metro Marunouchi Line) in Tokyo. Conversion work for use on the Choshi Electric Railway involved the addition of second driving cabs (reclaimed from TRTA 2033 for 2046, and from 2039 for 2040) by the Keio Group train maintenance and refurbishment company . The original bogies were replaced with narrow-gauge () Sumitomo FS-316 bogies from withdrawn Fuji Kyuko 5700 series EMU cars 5726 and 5725 (former Odakyu 2200 series 2227 and 2228). Pantographs from former TRTA 3000 series Hibiya Line EMUs were added to the former third-rail current collection cars, and the traction motors were also reclaimed from former 3000 series cars. External livery Both cars were initially painted in the "new" Choshi Electric Railway livery of dark brown and red. DeHa 1001 On 26 April 2007, DeHa 1001 was returned to service repainted into a sky blue promotional livery sponsored by game manufacturer Hudson Soft in connection with the 20th anniversary of the Momotaro Dentetsu game series in 2008. DeHa 1001 made its last run in "Momotaro Dentetsu" livery on 15 May 2012 before undergoing overhaul and repainting. On 11 August 2012, this unit was publicly unveiled in its all-over yellow livery formerly carried when it operated on the TRTA Ginza Line. It was returned to revenue service in this livery on 16 August. From January 2013, the original TRTA numbering (2046) was added to the Choshi-end of the car. In February 2016, car 1001 received a red roof, more closely resembling the livery carried by the Ginza Line TRTA 2000 series trains. The car was finally withdrawn following