So, I was waiting and waiting to clean this coin. I went back and forth between cleaning it and leaving it alone. I left it alone for about a year but it finally bothered me to the point where I cleaned it. Normally I would not put myself through so much angst over a very simple cleaning job but the coin in question is a denarius of Claudius. Here is the before Here is the after.
It is not very shiny, it is just clean. I was careful not to make it too shiny. It should look almost 2000 years old after all. I could not stand the splotchiness. If it had an even tarnish or toning, I would have left it alone.
Sorry to be the dissenting voice, but I prefer the "before" look myself, at least based on these photos. That is shown in a larger picture, though, so perhaps it's not an ideal comparison.
That is okay, we cannot all like the same things. Imagine what a dull word that would be. Click on the second picture you will see the larger version.
Exactly what does this mean? Did you make a paste of the baking soda and scour the coin or did you completely dissolve the baking soda and soak the coin?
The end results aren't unpleasant, but I do prefer the 'before' look. However, I don't know if my preference is due to an artefact of the photography or not.
The posting of that video clip would appear to be a non-sequitur at first, but I will admit that when I read the title of this thread, it suddenly became set to music, and the next thing you know, that nauseating-but-catchy tune had burrowed itself deep into my cerebral cortex for the next several hours. And that was before you posted the clip. So it seems diseased minds think alike. PS- that's my first time seeing the video to it, though. Now I'm going to go listen to some Tull or Metallica to purge it...
It's ruined. Definitely not a good improvement. Before it looked nice with the dark patina, now it looks like a bottle cap that's been run over by a semi truck. If I was you, put it in a sulfur envelope or use the egg trick to induce toning pronto on that coin.
Splotchy toning is not my favorite either. I think the gentle cleaning was an improvement on a great coin.