Scarce Vintage British European Airways Uniform Buttons

British European Airways (BEA) was in existence from 1946 – 1974 before being merged with other airlines to become BA British Airways, so these buttons are at the latest 1970's but as 12 of them are Bakelite I believe they date from the very earliest period of the company. No makers marks, 15 in total, 12 bakelite and 3 brass finish, all are in very good condition.