The British Gliding Association qualifications when you first went solo in a glider were as follows:
A certificate: One flight in a straight line with a landing. Never used in my time BTW.
B certificate: Three solo flights each consisting of a circuit with 360 deg turns in both directions followed by a normal landing.
C certificate: A soaring flight of at least 5 minutes above the height of the lowest point followed by a normal landing, plus a written paper on Air Law.
There was badge for these tasks, and your log book was endorsed.
Was that what you were looking for?