SEEKING INFORMATION ABOUT THESE VERY OLD ITEMS 🧐🙄🤔

Does anyone have any info on any of these items (further than what I will explain here) or know what any of them are worth? 1) A really REALLY old, heavy, empty can of 7Up soda. No idea on the year or even the decade when it was produced. Just two tiny holes in the top of the can. Badly covered in rust but that definitely adds to its charm. How old is it? How much is it worth? Do YOU know? 2) A really REALLY old antique camera. Fairly certain that it was functional at one point and is not just an old prop. No longer closes. How old is it? How much is it worth? Do YOU know? 3 & 4) A really REALLY old gas mask and army satchel. These came in an equally antique wooden rectangular box painted army green. I believe this is from WWI but am not 100% sure. How old are they? How much are they worth? Do YOU know? 5) A young ("teenaged") deer skull. I also have a buck skull. They were both gifted to me and are absolutely pristine and beautiful. Though I'm fairly certain I want to keep them, how much would each sell for? 6) My dad used to be a treaty negotiator for the Cowichan Tribes when I was very young. They gifted 4 of their world-renowned handmade sweaters to his family. I no longer have my dad but still have his much-loved vintage Cowichan sweater, worn by me in the photo. It is still, of course, very warm and in beautiful condition. Made around 1986. I will never sell this one, but how much is one this old worth today? Thank you for any help you may be able to offer ❤