I don't mean to cause an unnecessary fuss, but while browsing on YouTube, I may have discovered a copy of the original broadcast.
The uploader's name is in Spanish and is "Percy a locomotiva verde e amigo de Thomas." They uploaded the video on September 12, 2021 under the Spanish title, "A Triste História do Henry 1953".
Here is the link below if anyone is interested.
A Triste História do Henry 1953 - YouTube
The video has a vintage bumper at the beginning with a carousel that says "Children's Television". There are black title cards at the beginning and at the end. Julia Lang is narrating the story.
What really astonishes me is that the picture is actually near perfect, especially for something that was considered lost media.
I'm not 100% sure if it's the authentic version, but if it is, I want the original uploader "Percy a locomotiva verde e amigo de Thomas." to get their deserved credit.[1]
(reply) I'm sorry, but the video you linked appears to be a stolen reupload of someone's fan made recreation of the broaddcast.