Hello Fernando,
Excellent pic of the period with said sword. Its nice to know that there's some artwork out there supporting the connection. I am awaiting the arrival via inter-library loan of several books that might also substantiate the cup-hilt's presence on ships. Again, I don't doubt it nor challenge it, just looking for solid facts when someone asks to say "there is your proof" and be done with it.
This thread was also admittedly part selfish, as I have finally acquired a Caribbean cup-hilt rapier for my maritime collection! Thought I'd be 85 when I'd finally get one, but I'm 44 years early. Hope to post some pics soon, but have been extremely busy. Thanks for the post, though.
Mark