1972 Nickel With Reverse ?'s

Newbie,

I did not find it funny at all that you had a reaction and that is quite understandable,what I thought was that vapors certainly cause Eye and respiratory irritations and in your case allergic reaction but it does not cause immediate danger.And as you've noticed it is commonly used for various cleaning reasons but yes it is a chemical compound and one must use caution.

Touching it I don't think will harm in any way as it rapidly evaporates, it seems your reaction was due to inhaling and this liquid must be handled in a well ventilated area.the easiest thing to do is just not bothering to clean, I don't bother cleaning coins period because if a coin needs cleaning then that's not the coin for me!that's my humble opinion.
I've been looking at your posts, you've been posting some interesting Nickel variations.