I am not sure whether this has been posted before. Certainly pretty amazing cleaning job on a somewhat unique artifact. https://www.smithsonianmag.com/smar...tacular-2000-year-old-roman-dagger-180974310/
Nice story! Here's the "before" picture: and an alternate "after" picture: Wow! I had no idea that *sandblasting* could do such intricate cleaning!
I saw on the history channel, that its in an Austrian Museum. The Imperial Treasury of the Hofburg Palace/ Vienna.