We are operating down to Cat.II minimums.
Once or twice a year, we may have to complete a Cat.II approach/landing.
The planes were Cat.IIIa certified long ago, expensive maintenance.
The 747-200/300s had Cat.IIIb capability, but never were certificated as such.
Not worth the few actual landings requiring that certification.
In the US, anyhow, the airplanes need to log periodic Autolands (every 15 days in our case) to maintain Cat II certification.