Template:Infobox Underground stock
The 1959 Tube Stock was a type of London Underground tube train constructed in the late 1950s. They were intended for use on the Piccadilly line, but also saw use on several other tube lines. It was the first production (not prototype) tube stock to have unpainted aluminium alloy bodywork.
The Piccadilly Line extension to Heathrow, which opened in the early 1970s, coincided with the introduction of new 1973 Stock. Therefore, the 1959 Stock was transferred to the Northern Line between 1975 and 1979, allowing the scrapping of the oldest 1938 Stock on that line. The 1959 Stock also saw service on the Bakerloo Line in the 1980s, again to facilitate withdrawal of 1938 Stock.
When new, the 1959 stock was seen as distinctive because of the clean 'silver' exterior. Over the years, however, the trains' unpainted exteriors became jaded and dirty. The blue and grey interiors dated quickly. Stylistically the 1959 stock looked worn, but without the aesthetic red and green charm or old-fashioned thirties ambience of the more celebrated 1938 stock.
By the mid 1990s these units were getting old and were in need of works attention. By this time, all the remaining 1959 Stock was concentrated on the Northern Line. Minor refurbishment of the stock took place, painting the blue/grey interiors white and replacing some of the seat moquettes. This was done in a haphazard manner, the white interiors becoming very dirty inside by 1998, and with a failure rate that had risen to 1 in 1,864 miles the 1959 Stock was in urgent need of replacement.
New trains in the form of 1995 Stock were built as replacements for both the 1959 stock and the 30 trains of 1972 stock also operating on the Northern Line. Originally it had been planned to keep the 1972 stock running with the new trains, with the same extensive refurishment as done to the 1972 stock on the Bakerloo Line, but after one trial refurbishment of a Northern Line1972 stock carriage it was decided that it would be more cost-effective in the long run to have the line operated by one type of train only. Withdrawal of the 1959 Stock was a drawn-out affair, and when the last example was withdrawn on 28 January 2000, it was the only remaining tube train to be crewed with a motorman and a guard. One unit was repainted in "heritage" red and cream livery in 1990 to commemorate the line's 100th anniversary.
Several vehicles have been preserved, at various locations, including one complete 4-car unit (1304). The complete list is shown below.