Has anyone seen these: https://www.telefunken-elektroakusti...diamond-series

Of course, it's not the original company (I believe now having been bought by JJ), who aren't particularly renowned for producing the best tubes, but what's interesting this time is that all valves for sale have been properly tested and measured (with readings marked on boxes), which you'll see with the likes of this KT88:

https://www.telefunken-elektroakusti...roduct/kt88-tk

Could be an interesting option for anyone after reliable examples of the most common varieties of modern production valves... Anthony, were you aware of this, mate?

Marco.