I was the one that found this item and submitted it to Lucy. It dropped from a mob in Timorous Deep on the Legends server. During the first year or so of the Legends server, pirate camps could be found all over Timorous Deep. Each camp had a named that spawned when you killed the place holders. The named that dropped this item was on a shipwreck off the cost of the large island in the South East corner of the zone. This is the same island where you catch the shuttle to Firiona Vie.
Later the pirates all vanished from Timorous Deep. I whined a lot about it because it was the last bit of the original Legends content to still exist and they put it all back for a while. Then it vanished a second time. When it returned for the third time, I think it also showed up on the rest of the servers. Now the placeholder pirates spawn but I have never seen one of the original named mobs appear. Too bad because it was fun content while it lasted.
I am pretty sure I still have the eyepatch in my collection of clickies with all its charges.