Vintage BRAUN Lite RL515 Electronic Flash Unit for Photography- UNTESTED

Vintage Braun Lite RL515 Electronic Flash Unit. Includes black leather carry case with hand held flash. THIS IS AN UNTESTED ITEM AS IS NEEDS A NEW BATTERY. I do have the old battery and will include in purchase but it does need replaced. Great piece for a photographers collection. I could not find exact year but I believe it is early 70s?