Not a great deal I can say about this one. The hull looks to be late 19th century, but almost certainly not to one of the recognised racing classes of the time. Too broad for a '1730' Tonnage Rule boat. The schooner rig rules out anything else.
Well preserved and the rig is probably fairly close to what she would have carried originally, though I would have expected the foresails to have been led from rather lower on the mast, probably at about the height of the gaff jaws.