coin with dime on one side and penny on the other

The total gram is 3.5g why. 1929 penny should be and 3.11g and the 1963 dime should be 2.3g and total should be 5.11gram. Why is the penny 3.5g ?

 

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The total gram is 3.5g why. 1929 penny should be and 3.11g and the 1963 dime should be 2.3g and total should be 5.11gram. Why is the penny 3.5g ?

 

Because they grind down one side of each coin then stick them together.

 

I have a coin with 1963 dime on one side and 1929 penny on the other

 

Altered. Read the posts in this thread for the reason.

 

I have one and its 2.5 g its not glued

 

Ok guys i have one. Its in bad shape How is it 2.05g

 

Also altered.. The reasons are explained in this thread.

 

It could weigh almost anything, it all depends on how much metal was removed from each coin when someone joined the two together.