1974 Kennedy half dollar no mint mark with possible error?

Can anyone help me out with this? There is no mint mark and I found this on reverse. wel

 

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Looks like a contact mark from another half dollar. Edge is reeded so that's why the mark looks like a gear. Philadelphia has no mint marks.

 

I thought so too but it's too big to be the imprint of another coin.

 

Definitely reeding mark from another half. It can be a rolling hit and the mark looks bigger or squiggly.

 

I think it looks pretty cool but am of the same opinion already stated in that it's contact marks from another coin. Can you tell if those marks are raised from the field by chance?

 

I would like to see full photos of each side but for now I’m thinking edge reeding.

 

They raised.

 

That's the thing though they are raised. Here's some more pictures.

 

Thank you all. I appreciate everyones input. That's why I always run my coins through this site before I spend money on certification.

 

Thank you for the photos. After seeing both sides of the coin I am more convinced that it’s from the reeding edge of another coin.

 

That is definitely a hit from another reeded edge coin. It's not a known mint error of any kind unfortunately.

 

Yes I had all my Kennedy's out and was watching videos. I mixed the years up. I was so excited dang it!

 

Keep searching! Error coins are tough to find but they are out there.