Inherited this thing from my old man, and looking for some opinions on how much it might be worth. Thanks in advance.
Hi, welcome to the forum.
There have been several Manhattan Navy revolvers sold recently on GunBroker. This auction closed a couple of weeks ago:
You won't be able to retire on what it would bring, but it is a neat gun and a cool part of history. Bob
That link won't last indefinitely, that gun sold for $453 + $30 shipping