Looking to get into salvaging wrecks. Theirs A lot where I live. Fished this area for 30 years. Studied history and stories of treasure in this area. So much History. I just can't get to it.
When ever I'd go to where there was a possibility of wreck finds, I'd find fishing lures and lead sinkers. You done really good. Love the bosnspipe, (boatswains pipe) which is actually a whistle, and is probably sterling. It won't whistle for you, because it's not complete, still a great find. You have a modern .50 cal bullet, a civil war era bullet and a what looks like a 45-70 bullet, plus gold rings and silver coins. You are in a good spot, that's for sure.
Here's what a complete bosn's pipe looks like. Looking at your picture again, I think the bulb or bowl has been pulled away and it might work if bent back into position, just be careful and don't break it when bending.