I'm looking at perhaps HMS Fly or Pegasus for a next model, by Victory. Fly can come with an enhanced package, but Pegasus seems to be already an upgraded version for less than the Fly + Upgrade. Here is the thing: Pegasus comes with copper sheeting, which I am not fussy about, but it only sailed 2 years, 1777 and 1778. Widespread copper sheeting didn't appear in the RN, according to the Greenwich Museum, until 1783. Is that technically a mistake? Fly survived much longer, and well into the copper bottom period however. Any thoughts on this?