The IBM 1052 was a Selectric typewriter based printer-keyboard for the IBM 1050 Data Communications System. Released by 1963, IBM 1050 was one of the earliest computer terminals and was available in various combinations but all included an IBM 1051 Central Control Unit2. The other IBM 1050 components included the 1053 Console Printer, 1054 Paper Tape Reader, 1055 Paper Tape Punch, 1056 Card Reader, and 1057/1058 Card Punch3. The 1050 could send and receive data to and from another 1050 terminal or an IBM 1400, 7000 or System/360 series computer4.
The IBM 1052a (pictured above) had an off-white coloured faceplate5. An example of this keyboard is housed at Living Computers: Museum + Labs in Seattle, Washington.
The IBM 1052-7 seems to be an evolution of the 1052 specifically for the IBM 2150 Console for the IBM System/360. Visually, it looks similar to the 1052a but features a few more buttons on the faceplate.
This variant has a black coloured faceplate, a larger switch on the left of the faceplate, and several more toggle switches.