I like that one. I've seen others like it, but they always had badly beaten up cases; yours looks much nicer. There are a huge variety of Benrus Sea Lord watches with different dials and case shapes; it was their line of water resistant watches. Yours will probably need serviced; every one I have bought has needed it because of their age. I'd have to see the movement to be certain, but yours probably dates from the mid to late 1960s.