I'm looking for Information on this 1970 quarter that weighs 5.09 g 0

[dkauf]

[dkauf]

[dkauf]

[Greenstang]

Welcome to the Forum

It looks like corrosion.

Some of the coin has probably been eaten away accounting for the lighter weight.

[dkauf]

Corrosion that adds metal to the surface of the coin?  No copper is showing through the nickel clad.   

 

[VKurtB]

32 minutes ago, dkauf said:

Corrosion that adds metal to the surface of the coin?  No copper is showing through the nickel clad.   

 

Wha? Huh? Go back and check weight. She's light. And by the way, corrosion CAN add apparent "stuff" to a surface. Take fresh steel wool and "burn" (oxidize) it in a bunson burner flame. The remaining rusty wad of stuff weighs MORE than the steel wool did originally. Oxygen ions are now attached to the iron ions.

[dkauf]

[dkauf]

Thanks to both of you for the responses by the way.  I'm starting to suspect heat damage.  Thanks for that insight VKurtB.

Edited November 27, 2019 by dkauf

[Conder101]

Is the clad layering visible on the edge?

[dkauf]

13 hours ago, Conder101 said:

Is the clad layering visible on the edge?

Here are a couple pictures of the edge.  I'm guessing those layers would not be there if it was struck on a nickel planchet and its to heavy to be a nickel.  I just checked my scale with a nickel and it weighed 5.01.  Thanks again.  

 

 

Edited November 29, 2019 by dkauf

[Conder101]

Yes a nickel is a solid one piece composition.