The Great Britain penny is very common, even in UNC and has minimal value. The Bermuda Crown is pretty common, but it is .500 silver (about $7 worth), not real sure but I think top end numismatic value would be about $10-12. The Hawaiian medal I have no real idea about but generally a dealer in exonumia would be asking $3-10 for something like that, and as it seems pretty generic, I would say $3-5. However, value is what someone will pay for it, and any of these items could go higher than my guesses.
Thanks for informing me on those coins. What about the shipwrecked coin? Any clues on that one?
Thanks