I believe this has survived nearly 200 years. 197 if my math serves. Please consider this magnificent 1820/1840 early American treasure. Never sandblasted, You may wish to paint although this one has only had blacksmith paint (honeybee wax)No paint. The back plate is a necessity, as we no longer have solid wooden walls to mount these to.
This mounting plate has been fashioned from an old bandsaw blade a very fine grade of steel. The crank handle has been repaired. My work and very satisfied customers define my mission statement, " NO ANTIQUES HARMED".
See the rest of these I have on my site.