Consignment & Grading

Hi -
I am very, very new to coin collecting. I am a sports card collector and have had thousands of cards graded by PSA. I have some sets that I have purchased from the US Mint over the years. Is it better to keep them as is or having them graded?
Secondly, I have amazed so many sets from the US Mint, like 1 ounce coins, quarters, speciality sets, 1 ounce gold, etc... I have started to purchase larger denominations (100 ounces, kilo, etc..) can someone recommend a reputable cosigner?
Many thanks and appreciate the help (from a Rookie),
Peter
PFB
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Comments
co-signer??????

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