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Original magnetic-drum store for electronic computer built by Andrew Donald Booth

Original magnetic-drum store

Magnetic drum store, model 1004-S, 4.48 MBits capacity, S/N 2200

Magnetic drum store

Magnetic drum store, model 1004S5, 4.48 MBits capacity, S/N 1205

Magnetic drum store

Magnetic drum store, model 1016, 17.92 MBits capacity, S/N 2830

Magnetic drum store

Magnetic drum store from an I.B.M. 650 Computer

Magnetic drum store from an I.B.M. 650 Computer