IS THIS 1977 DIME A WRONG PLANCHET ERROR OR ANEALED ERROR?

[Capone1929]

Found this 1977 no MM ROOSEVELT dime and it seams improperly Anealed, on a penny planchet, or foreign coin planchet, wrong stock, missing clad layer? The edge  is all copper, obverse and reverse copper toned, and the reeds seem all wrong and are smooth in places very similar to a penny edge! I HAVNT been able to weigh it yet, however it seems thin and lighter in weight than it should be. ANY help, or input would be greatly appreciated, if it is a true error, possible value would be great as well, Thanks again, Capone1929

[bsshog40]

It looks like a environmentally damaged coin to me. If it had been on a cent planchet there would be 2 differences. #1 The lettering would be further from the rim because the cent planchet is larger. #2 There would be no reeds on the rim. 

[Just Bob]

Looks stained. Not an error, just dirty.

[BillJones]

It is corroded. Copper - nickel turns dark brown or black when it corrodes.This piece has post mint environmental damage.

[stash-1]

Here's what a improper annealed dime looks like .

 

[Conder101]

Also looks like that may be just an environmentally damaged coin as well.

[stash-1]

33 minutes ago, Conder101 said:

Also looks like that may be just an environmentally damaged coin as well.

It's a good one . I posted back on cointalk back in the day and fred weinberg confirmed it .

[stash-1]

Just now, stash-1 said:

It's a good one . I posted back on cointalk back in the day and fred weinberg confirmed it .

Actually, I have 2 of them .

[stash-1]

Also have this one too .