Minolta XM and XM Motor
Minolta XM and XM Motor, each with the fast AES-finder.
The XM was Minoltas attempt to establish at the market for professional cameras. It was released in 1972 and was the first professional SLR with an electronical shutter and aperture priority.
The standard-XM couldn´t be equiped with a Motor Drive. To solve that restriction in 1976 the XM Motor was released, with built-in (non-removeable) Motor Drive.
Both cameras were built like tanks and offered reliable and usefull features but neither the XM nor the XM Motor could compete against Nikons F2 and Canons F1.
It seams that the 70s have not been the time for professional cameras with electronical features.
The cameras were sold in Europe as XM, in the US als XK and in Asia as X1.