I was sort of hoping those with the records and experience some forumers on the site have they may be able to source which rifle it was paired to as the bracket may not be what the scope was originally paired to with the rifle. But in saying that the bracket may also be a source for another T's identification.
When you look at things the T was a niche piece of equipment and not that many made or built up given the numbers of No.4's made during WWII and post WWII.