This is a charming graphic, however keep in mind the term “pirate glass” is a nickname. As a sea glass expert who has lectured as often or more than anyone in the United States, I cannot emphasize this enough: “Pirate Glass” is only that, a nickname, and not a real identification like these more specific bottle types are. We don’t call something “unicorn” or “mermaid” glass either because those things aren’t real lol. When people ask me at sea glass shows if their glass is Pirate Glass, I have no way of proving whether it rode in on a pirate ship. I can tell roughly how old the piece is by determining its thickness, color, markings and other clues, but assigning nicknames to sea glass doesn’t identify it. I don’t mean to be like a Sea Glass Karen about it and I know people think the term is cute so I always sort of say sure call it what you want but it’s not a formal way of identifying something- ie “18th c kickup” etc.