1776 bicentennial half

I need some advice on a 1776-1976 no mint mark Kennedy Bicentennial half dollar but the coin only weighs 10 grams so I'm kind of confused on this coin and it looks like damage but but it's only damaged on one side and kind of looks like a strikethrough also in the light thank you with any knowledge will be helpful on half dollars specific

 

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Whew. . . Now that I've caught my breath, do you have a picture you can share?

 

Here they are

 

10.66 my bad

 

10.65

 

What do u think are the pics ok

 

10.65

 

Sorry, my quip was on your first photo of a cent. A half-dollar should weigh 12.5 g and yours could be damaged. Perhaps @Fred Weinberg would know.

 

duplicate post. ok? S'alright.

https://www.cointalk.com/threads/1776-bicentennial-half.302242/

 

Not a Mint Error.. PMD - Post Mint Damage

 

Looks like bronze under the zink

 

'64: 12.50 grams

'65-'70: 11.50 grams

'71 to date: 11.34 grams

So 10.65 is not that far off. The damage could have reduced it a little, and originally it could have been a little light but still within tolerance.