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The mint has gotten very, very good at the minting process, but 69 is reaching. All modern coins whether Mint state or Proof have an average of 67-68. This does not include circulation quality coins. These are coins that come in Mint or Proof sets. Anything lower than 67 is a weak or bad strike. I routinely submit thousands of coins a year for certification. 69 is not an easy grade to hit. 68's are a dime a dozen. But consider this, most 68's hold a value less than the price of the slab.
The only way to get 69's or 70's from all modern proofs or mint coins is to send them to a less than reputable grading service.
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