1999 p experimental quarter 0

[Ratzie33]

No copper core. Whatever metal it is Washington’s face has trouble appearing in the strike, leading me to think that it’s a tougher metal than the usual composition. 

[Ratzie33]

There is also a fringe line on the rim where the clad metal and silver core metal meet, further leading me to believe its authenticity.

[Ratzie33]

The reverse.

[Ratzie33]

Almost like the metal started to buckle

[Ratzie33]

Close up obverse

Edited November 7, 2019 by Ratzie33

[kbbpll]

It looks to me like it was plated, and the plating is just wearing off. Is there a reason you think that the mint may have been experimenting with composition in 1999?

[Ratzie33]

https://coins.ha.com/itm/errors/1999-p-25c-pennsylvania-quarter-struck-on-an-experimental/a/308-10031.s

[Just Bob]

The article states that the experimental coins that have been found were either greenish, or the color of a Sacagawea dollar. Your coin does not appear to be either of those colors, but it does appear to have been plated.

[Greenstang]

See your other post for my answer. Only one post is necessary.

[ldhair]

Plated