Noob first day! Jackpot maybe.

[Flipperfla]

Loaded up the skiff and the Wife and I headed out with our Minelab Go-Find 66. Needed something super lite, simple and packable. I read some posts on techniques and did my research. One that stuck in my head was if it is a crusty piece don’t pitch it. It was so oxidized from the salt water I didn’t even think it was a coin.......got home......read a post on how to clean up something Silver. Did the baking soda and hot water several times. This is as far as I got and went when I realized what it was. NOW I need advise on what to do. Take it to a coin shop to let the pros take over?

I got it pretty well cleaned. Looks like a 1939

 

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[wlb42]

I am a PRO.....your coin is a U.S. made silver Mercury Dime, my friend - the "give away" was the "In God we Trust" in the lower left - If you take a photo of the reverse side it may also be a "give away". NICE FIND.

BILL
Northern "Panhandle" FLORIDA

 

[PA_Coin_Collector]

I'm not a professional when it comes to cleaning coins,but I know you don't have to go to a coin shop to get a silver cleaned. Most times just some purified water will work on silver though because as long as you dry it quickly after,it won't tarnish. My best guess personally would be to look up some other methods and just look around the site in general for similar forums. Also, congrats on that mercury!

 

[CRUSADER]

Lemon juice.

 

[Flipperfla]

Yep! First time we used it. We found this and a penny all day! Though it maybe was a dime by its size but it was just a black chunk. Just having trouble getting the oxidation off the bottom corner to get a date. What is funny I was telling my Wife if it is a dime I only have to find $279.90 more until it pays for its self. LOL! She’s hooked!

 

[Johncoho]

I would continue with the baking soda, aluminum foil, and hot water method. Nice recovery. Salt water is hard on silver, so don't expect miracles.

 

[ROIGuy]

Electrolysis should get it done if done right and NOT damage the coin..

 

[Professor of Engineering]

Nice Mercury dime save! IMHO: Lemon juice should clean the coin.

 

[cudamark]

The damage to the coin is already done....you can't undo it. You've already got it about as good as it's going to get. Any further cleaning will just take more detail off the coin. The coin is worth maybe $1 due to it being silver. Nobody would want it as a collector coin, so, having a "pro" take over would be a waste of time and money. So, enjoy it, frame it, make a pendant or ring out of it!