This is a later version of the classic Red Dot Artar 19" lens similar to that sold under the Schneider brand after the takeover. Probably from the early 1970s.   Has a modern Copal 3 shutter and is a known top performer working well in both infinity and close up applications.  This lens work with all formats up to 11x14" and is also popular with 8X20" banquet format camera users.  Perfect glass and operation, ready to use.    (No lens panel included but panels for most large format brands would add $50 or so)