Television series that ran from 1955-1960 for a total of 144 episodes. Stars Richard Greene, Archie Duncan, Alexander Gauge, Alan Wheatley, Bernadette O’Farrell and Patricia Driscoll.
You can stream Adventures Of Robin Hood (HQ) Ep 1 The Coming Of Robin Hood (2015) free and legally on OldReel, via the Internet Archive.
Yes — it is in the public domain and can be watched and shared freely.