Blast from the past

I've probably had these buttons since the mid 1970's but as decilmalisation was 1971 they are probably from the late 1960's. They've been in my sewing tins for years but I've never made anything which has needed this colour of button. As I am on with curtain making and one or two other projects, I've been searching through and round them. It just came to me that they'd make an interesting blip before they go back in the tin to become invisible again.