Vintage universal A-17 automatic manual 35mm camera flash

This is a vintage universal A-17 automatic and manual 35mm camera flash. It takes four AA batteries. We tested it and it works both in manual mode (press the red button the back), and automatic (tested with a Canon DSLR). The mounting foot is very tight on a modern Canon camera, but the plastic foot could be filed down. It is in good shape, with no damage, but some wear on the foot.