That's a late 60s/early 70s bike with a 531 frame. I don't know who the maker is.
Pictures you need to post:
1. Full headtube from the side and front (not just the fork crown)
2. The seat cluster from the side
3. The rear drive side drop out viewed from the drive side
4. Any joins in the brazing on the frame or braze-ons that are non-standard.

You also need to tell us the seatpost size, and if you know it, the bottom bracket threading (or alternatively any numbers on the bottom bracket).

What you are showing is most likely not sufficient.