Lightweight blue summer flight trousers with original braces

Textbook and rare summer flight trousers with their original rare and textbook braces. The trousers are in very good condition with all working press studs and zippers in working condition. One of the zippers has a few missing teeth but are in working condition. The trousers are a very rare, non lined variant on the heavy lined winter trousers. Nicely marked RB-Nr. 0/1304/5028. Very rare flight trousers!