Andrew said > Just found this article, and apparently the old displays were replaced > with the new ones shortly after the grounding in 2000/2001. This would > mean they are probably LCDs. > > http://www.concordesst.com/returntoflight/mods.html > > Also, here's a photo that very clearly shows the refresh: > > https://www.jetphotos.com/photo/7009833
Interesting. Searching for 'Marrilite display' (I wonder what that is) turned up this page, which mentions "There was a plasma display at the front of the cabin showing the altitude, the air temperature and the current speed in both miles per hour and Mach number." https://www.heritageconcorde.com/concorde-cabin--passenger-experience
