It does have a plaque that reads "JJ511" I did try to look this up to see if it is tied to any vessels or even naval vessels but nothing has come up. I have found Ships captained by J. J (initials) and numbered 511 but I'm not sure. Please see the pictures if you have any question please let me know! The item "Large Vintage Anchor Brass Maritime Oil Lamp Lantern Nautical Ship" is in sale since Wednesday, June 30, 2021.This item is in the category "Antiques\Maritime\Maritime Lamps & Lighting". The seller is "listingvegas" and is located in Michigan City, Indiana. This item can be shipped to United States.