It's my turn to guess: the first one with a salmon dial is a limited edition for the Japapese market (with a transparent back), 18K. The one on its right is a 96 (I doubt if 3796 has this dial and Geee, I love the iconic big crown) in platinum. Second picture, 3796R silver dial on the left. Third picture is a challenge, I've never seen a black dial on a 3796. Is it a limited edition for a special event / market (like the salmon)?
Thanks for sharing the great pictures.
F.