School dress from past decades

Girls clothes especially school wear from the past have  always fascinated me.

This is very much 1950's, before I was born, familiar to anyone who read the school based stories popular from that era whose illustrations would be like this such as pre 1970's Enid Blyton.
The simplicity of it is what strikes me with just a blazer over the tunic (Gymslip for Brits) although unlike for most establishments a tie is missing.
What I normally wear is very much the modern version and targeted more toward Infant and Juniors reflecting the changed attitude toward senior uniform being blouse/formal skirt although pants are increasing in popularity for girls.