2009 Lincoln Cent tarnished?

bsshog40

I was looking at my Dansos and I noticed this issue on about 3 of my 2009 Lincolns. I thought just happening on the proofs but also on one of the D mints. It's silver in color. Odd color for toning if you ask me. Any ideas?

coinbuf

I've had a few cents do that also, very unattractive imo.

thefinn

Looks like a reaction between the thin copper layer and zinc, making brass.

ChrisH821

@thefinn said:
Looks like a reaction between the thin copper layer and zinc, making brass.

The 2009 mint and proof set cents were 95% copper weren't they?

BillDugan1959

@ChrisH821 said:

@thefinn said:
Looks like a reaction between the thin copper layer and zinc, making brass.

The 2009 mint and proof set cents were 95% copper weren't they?

No, if you mean the normally packaged uncirculated sets and the normally packaged proof sets. Traditional bronze coinage was a special order(s) later in the year.

CollectorBonEZ

Looks like Lincoln has a serious ear infection possibly gangrene and the cabin looks ominous with a heat signature sinking into the ground.

Onastone

Yes mine are also spotting up. The mint wanted to make these special, stand out cents.

bsshog40

@BillDugan1959 said:

@ChrisH821 said:

@thefinn said:
Looks like a reaction between the thin copper layer and zinc, making brass.

The 2009 mint and proof set cents were 95% copper weren't they?

No, if you mean the normally packaged uncirculated sets and the normally packaged proof sets. Traditional bronze coinage was a special order(s) later in the year.

These are from the 2009 proof set. They are 95% copper. I also have another 2009 proof set that has just been sitting in ogp in my cabinet and those are doing the same thing.

ricko

I would be very unhappy if they were my coins....I had stopped buying mint sets a few years earlier, and seeing this, it adds one more reason I am happy with that decision. Cheers, RickO

Hemispherical

An alloy issue?

Overdate

@BillDugan1959 said:

@ChrisH821 said:

@thefinn said:
Looks like a reaction between the thin copper layer and zinc, making brass.

The 2009 mint and proof set cents were 95% copper weren't they?

No, if you mean the normally packaged uncirculated sets and the normally packaged proof sets. Traditional bronze coinage was a special order(s) later in the year.

All of the normally packaged 2009 uncirculated sets contain 95% copper cents. All 2009-S proof cents are also 95% copper. The 2009 cents made for circulation are copper-plated zinc.

Hydrant

Interesting but unattractive.

bsshog40

Yea if it were blue or something like that, wouldn't look too bad. Silver color just doesn't do it very well. What I really can't believe is that I put these in this dansco 10 yrs ago. Where does the time go?

Akbeez

I've got quite a few of these cents in cut-out strips from the Unc Mint sets. Where the blister was punctured when cut out, they all had significant toning (gray) similar to yours at those locations. Intact blisters were 98% ugly tone-free. Some were quite attractive.

privatecoin

Just pulled my danso album out and 2 of mine have similar toning. Only on the proofs though, none on the mint set ones.

bsshog40

@privatecoin said:
Just pulled my danso album out and 2 of mine have similar toning. Only on the proofs though, none on the mint set ones.

Yea I have the marks on 2 proof coins and marks on one log cabin D mint one.

ldhair

The mint really messed up on these. They must have forgot the process they used when they were using copper.

BuffaloIronTail

@CollectorBonEZ said:
Looks like Lincoln has a serious ear infection possibly gangrene and the cabin looks ominous with a heat signature sinking into the ground.

It's a FLIR signature. Somebody's in there.

Pete