Welcome to the forum. It seems you have been gifted with two VERY desirable and valuable pistols. The condition seems to be amazing. They may be worth perhaps $3,500-$5,000 EACH! Both appear to be general officer's pistols. Was the ladies husband a general? If so, there may be other items of provenance that could increase the value and add to the history of these important and historical Colt pistols. We NEED lots of good, detailed images of both sides and all markings. Do NOT entertain any offers until we figure out exactly what you have.
PS. You should add "USP" and/or "GO" to the title of your thread.