Don Phelps found two of these large buoys washed up on Manchester State Beach. There were no barnacles on them so they hadn't been in the water for a long time.
Gary Humfeld found a smaller buoy that had been in the water a long time as it did have barnacles on it.
Below you will see two Asian characters and a series of numbers on the buoy.
Tomorrow I will post the photo of the large light bulb Gary found. If you can further our knowledge in any way, we would surely appreciate it.