This is an electronic flash, model #252, used with Polaroid cameras models 95, 95A, 95B, 100 (rollfilm), and 700. This flash is similar to the Wink-Light model #250, except for the sync cord replacing the hot shoe.
This particular example is also equipped with an auxiliary flasher (flashgun), model #256, designed for Wink-Lights when the level of ambient light was too low to use the Wink-Light alone. It used AG-1 flashbulbs and the reflector dish swivels for bounce flash capability.
For more on this accessory, see the the very useful Land List
website.