These are relatives of mine, and I was hoping to find out in which country they are based on the uniform. Should be US or Argentina, based on what I know. The photo could be from early 50's? Male uniform, mid 20th century, mid coloured jacket with single breast buttoned high, with high large lapels. Two top pockets, two waist pockets. Clear waist line stitch. Dark soft shoulder boards, single medium stripe and circular insignia on boards. White shirt with inbuilt collar, both collars pinned. Dark tie with a tight small knot. Pressed and creased trousers. No hat.