Cooper was wearing a skinny tie and small collared shirt, both out of style..
However, his suit had wide lapels.. in style, just barely..
Most of the 50's and 60's suits were small lapel's.. Cooper's suit was either a year old or from the 40's/early 50's..
In the 50's besides small lapel's suits became patterned, more colourful and textured... 60's were small lapel.
Most likely it was old,, late 40's era and not nearly new.