Clean and crisp white china with gray border edged in silver.
My parents lived in England in the 1960s and I believe they acquired this Rosenthal German china while they were abroad.  This was only used for super-special guests which were a rare occasion in the 70's, less in the '80's and maybe only a couple of times in the 90's.  Otherwise it was kept in a china cabinet in an air-conditioned home.