It should work fine though note that the 177A has a trigger voltage sent through the hotshoe over 6v and some cameras can't handle it. Old cameras should be fine like that model. It isn't much over 6v but it is over 6v.

It will sync just fine at whatever sync speed the camera can use, with a leaf shutter it should work at all speeds. It is a mechanical shutter so it works without battery power present.