What are the differences between gold/siver “coin” vs. “round”?
littleadv gave a great answer, but neglected to mention one thing.  Modern minted coins usually only contain a (high) percentage of a precious metal.  For example pre-1965 quarters are 90% silver and 10% other, to maintain strength and durability. Rounds of silver bullion are usually .9999%, or fine, silver, which is considerably softer.
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### Instruction:
What are the differences between gold/siver “coin” vs. “round”?

### Response:
littleadv gave a great answer, but neglected to mention one thing.  Modern minted coins usually only contain a (high) percentage of a precious metal.  For example pre-1965 quarters are 90% silver and 10% other, to maintain strength and durability. Rounds of silver bullion are usually .9999%, or fine, silver, which is considerably softer.