This piece isn't rare but this is direct from 16mm so it should look a bit better than most versions floating around. Before Jeremy Brett and long before Watson became a woman this was the first attempt by television producers to make Sir Arthur Conan Doyle's character into a weekly series. This version never went past the pilot stage but the lead actor (Longden) does give a solid performance. A bit low budget but worth watching. The film fell into the public domain in 1979 from lack of copyright renewal.