Error Experts- What's going on with this Massachusetts state quarter?

cmerlo1

I bought this on the cheap as a filled die error at a show yesterday. I liked that only of the center of the coin had any detail and the reverse was HAMMERED, maybe indicating the obverse was struck through something instead. When I got it home and under good lighting and magnification, I noticed a groove running around the inside rim of the obverse and I'm not sure how it got there, other than something outside the mint. What do you think?

TurtleCat

Struck thru grease is what I’m thinking. The reverse being as well struck as it is means something had to be on the obverse filling in the die space.

ctf_error_coins

Struck thru grease and a very nice example.

cmerlo1

@ErrorsOnCoins said:
Struck thru grease and a very nice example.

Thank you! What do you think about the groove around the inside obverse rim?

ctf_error_coins

@cmerlo1 said:

@ErrorsOnCoins said:
Struck thru grease and a very nice example.

Thank you! What do you think about the groove on the inside obverse rim?

I don't know. Coin looks right tho.

Zoins

Great looking struck-thru grease! These errors can look amazing!

I've thought about creating such sets with TrueViews. I wonder if anyone is building such sets?

ricko

Yep... grease filled die... very grease filled Cheers, RickO

SullivanNumismatics

As others have said, it's struck thru grease.

CaptHenway

Weight normal?
How’s the ring sound?

cmerlo1

@CaptHenway said:
Weight normal?
How’s the ring sound?

Weight is 5.73 grams (normal) and ring is good.

FredWeinberg

Struck thru, and I think the thin 'inside rim'
is just a minor anomaly - 'as struck'

Nice example of a 'struck thru' grease or
machinery oil error.

cmerlo1

Thanks, everyone!!!