GWIS
1924
At least the AP forged carbon cases were novel at the time.
Wasn't the Alinghi the first forged carbon case and even more than 13 years ago?
In 2006 I was on the Purists trip to Le Brassus and seem to remember that we had a look at the autoclaves they were using to "cook" the forged carbon cases. It was all very exciting and new (to the uninitiated like me) at the time.
I think everyone's concern was how long the cases would last and how easy they would be to dent and graze. The same may apply to this GP.
Long live the Amvox line!