In about 2019, P. Mauriat began selling their own version of a Selmer Series II bass copy. Although there was a lot of debate about who makes this horn, P. Mauriat has stated that they designed and make it.
In May 2024 I had the chance to playtest a PM-350, and wrote a review about it for the Bassic Sax Blog.
https://bassic-sax.info/blog/2024/review-of-p-mauriat-bass-sax