System/370 key dates*
Model Announced First Shipped Withdrawn
115 March 13, 1973 March 1974 March 9, 1981
115-2 November 10, 1975 April 1976 March 9, 1981
125 October 4, 1972 April 1973 March 9, 1981
125-2 November 10, 1975 February 1976 March 9, 1981
135 March 8, 1971 April 1972 October 16, 1979
135-3 June 30, 1976 February 1977 October 16, 1979
138 June 30, 1976 November 1976 November 1, 1983
145 September 23, 1970 June 1971 November 10, 1971
145-3 June 30, 1976 May 1977 October 16, 1979
148 June 30, 1976 January 1977 November 1, 1983
155 June 30, 1970 January 1971 December 23, 1977
158 August 2, 1972 April 1973 September 15, 1980
158-3 October 26, 1976 September 1976 September 15, 1980
165 June 30, 1970 April 1971 December 23, 1977
168 August 2, 1972 May 1973 September 15, 1980
168-3 February 18, 1976 June 1976 September 15, 1980
195 June 30, 1970 August 1973 February 9, 1977

* Sources: A. Pedegs, "System/360 And Beyond," IBM Journal Of Research And Development, Vol. 25, No. 5, September 1981, Table 2, p. 387; various data on file in IBM Corporate Archives.

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