Richard No pickle juice. An over night soak in acetone is the best way for the coin. No brush. Remove from acetone soak. Saturate a q tip in the acetone and roll it across each side of the coin changing the q tip as the crud comes off. Hold the coin on its edge and use the q tip in a sawing motion to get the crud out of the reeding. Dip the coin in the acetone one more time then prop the coin up on its edge and let it air dry. Any else will probably cause more harm than good.
Actually pickle juice (dill) is good for preventing and/or alleviating leg cramps! Try it, it works! Looks like it worked for the coins, also.
I collect "circulated" coins for my date/mm collections. The above, carefully cleaned coins would fit in my collection just fine.
...well,...they are vg8-vf20...all melt targets at this condition, hard to see any doubling with wear stages, obliterated, most likely...as of today melt is $1.98 for silver dimes...imo...Spark
Experimenting is good Spark as long as you are willing to accept melt value. I've done it myself. In your case it made the coins more distinguished looking, in my case, oh well, it is what it was!
Pickle juice also makes an excellent window cleaner. It leaves a curiously fresh scent throughout the house, too. Guests would remark, what's that lovely scent? I hate to tell them, but then I hate to lie, too, so I just split the difference and say, I'm pickled about it myself.
Wait.... Seriously? 2% from 30 minutes in pickle juice and a slight bath in a jewelry cleaner???? I really find that hard to believe. Can you link some documentation for that?
Seriously? That's a legitimate question, definitely not being sarcastic or derogatory here. I have a lot of copper.
There have been many theories about how ketchup makes copper pennies clean and shiny. Majority of those who experimented on the method say that it is simply the combination of salt and vinegar in ketchup that cleans the copper coins. Therefore, you could choose not to waste money (and ketchup at that). Coin cleaning with vinegar and salt formula will do a fine job on your copper coin....
Yes, Found out accidently when a Ketchup packet broke in my console of the car and covered the change in the console. All cents in contact were shinny.
Don't do this! This is bad advice. Vinegar is an acid. The coins shine because it REMOVES a layer of copper.