T3129 will be late 1942, say September/October. Others may be more precise.
I look upon Bren Guns as akin to magnificent old ladies, likje your mum or grandma. Ladies that deserve all of the dignity and respect that you can bestow on them. When I see of Brens being messed about with in a way that is unbecoming, I think of lions in a zoo or performing in a circus.
After having been in action with a Bren (OK, albeit back in the middle ground where you'd expect the REME to be) you form an attachment to these magnificent beasts