I don’t think I’ve ever seen footage of Silvia Hindorff doing her skill, let alone bars for that matter, but there’s a west German athlete competing one here in 1984.
This channel is uploading a lot of older German broadcasts. They’ve got the 1984 DTB as well as some other rare finds, like the Bulgarian team training on beam in '83 and a bunch of dual meet footage from the 70/80s. There’s also some figure skating and diving footage on that channel.