Interesting palm tree fittings with crown silver filament lamps

I mainly took this picture as I was surprised to see 60w crown silver filament lamps still in use here in the UK, as most places opt for filament LED versions. This is in the window of quite an upmarket restaurant and they seem to be on 24/7. The lamps have heat disks so are probably modern Bell or Crompton branded versions that have been purchased online. The fittings are also quite interesting, there was a third lamp at the top out of shot.