For a Brownie, the Starmatic is a remarkable sophisticated camera, though at the high cost of $34.50 (compered to $6 for a starlet!). Introduced in 1959 (two years after the original star series cameras on which it's based), it featurs a double exposure lock, and automatic exposure, in a format similar to the Bell and Howell Electric Eye - though with a much lower build quality. However whereas the Electric Eye controls exposure by automatically varying the aperture, the Starmatic uses a more complex shutter speed control.
The Selenium cell on this particular camera is dead, and hence the auto exposure no longer works. Fortuntatly the exposure value can be manually set.
The Starmatic was upgraded in 1961 to the Starmatic II which in turn was discontinued in 1963.