This is a lovely coat, dating from the early 1960's. It is very long and made of heavy ivory wool. The coat is double breasted and has beautiful diamante buttons. It likely would have been worn in the evening over a cocktail or opera dress.
Photos courtesy of Ritual Vintage.

These two coats, by Ben Zuckerman probably date from the early 1950's. They are both voluminous, in order to cover the full skirted dresses popular at this time. Neither coat appears to have any closures so would be clutch coats, named that because the wearer would clutch the coat closed with their hands.