I have a 2 coin mint set with an oversized mint medallion, this is an unusual one to me. It is a bicentennial quarter and half clad with a Denver mint mark but the medallion is a San Francisco mint medallion. It came in a blue mint envelope with the Directors name on it Mary Brooks. This is the first one I have seen and I was wondering if anyone had any history on this mint set. If needed I can post some photos later tonight