Conserving civil war tokens, tips, thoughts

Per another thread and through comments I heard at a LCS, I have heard of people trying to conserve raw civil war tokens. I have bought raw , graded and submitted raw for grading , all untouched by me.
I have had some dirty and sometime dry looking coins. With most, I sold. However I have seen videos showing people using a brush with oil to treat early copper, and the LCS mentioned coin care, to clean, conserve copper and definately CWT.
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For learning, what would people recommend or share thoughts on conserving...I would think some categories, might be lower raw CWT that are for a personal collection and stay raw; rarer raw CWT that might be sent in for grading. High dollar or scarce CWT that people want to keep raw (thinking EAC like raw coins.
So any advice on conserving, preserving, removing dirt on CWT would be appreciated. Trying to learn what people use, and what people deem acceptable to collectors.
Thanks
Comments
If you want to experiment, I'd get cull Indian cents. They are generally cheaper. Avoid soap. Avoid water. [It is possible to use both detergents and water, but you better know what you are doing or you'll make a mess of the surface.] Acetone should be safe. Mineral oil is also slow but safe.
Unless it is a rare piece, you are likely to spend more time and money than it is worth without improving the surface quality very much. But it is sometimes fun to play around.
The suggestions by @jmlanzaf are very good.... use cull copper to experiment... it is interesting to see what can be accomplished and what is damaging. It also will help you recognize coins that have been 'worked on' when looking for pieces to buy. The more you learn, the better your purchases can be...Cheers, RickO