Quick park strip hunt. Silver Dime, Crustiest War Nickel ever! UPDATED BELOW.

[Stiffwrists]

Smacked it with a hammer (to break off the big chunks)... soaked it in lemon juice overnight and rubbed with baking soda! Pretty good results. Thanks to everyone for the suggestions.

 

[Waveoff]

That's more like it! Thanks for the updated pics.

 

[TriadHunter]

That's an unbelievable transformation on that war nickle! Wow! Great tips everyone. Love this forum!