Here is another unusual one I have never seen before. Case dated N3 and Movement is N4. Standing block markers and a raised stripe across face with "Automatic" on it. Only a hint of wear on lug high points. Bezel has an interesting engraved pattern I haven't seen before. Inside of case back is ink stamped "3335".I added the period band; watch came to me on a stainless expansion that was obviously an ill fitted replacement.
Anyone have a guess as to what model family this comes from?