Which Company has submitted the most?

After reading another tread, I wonder which company (Coin Vault, L&C Coins, etc.) has submitted the most coins to PCGS. Similarly, the most coins to NGC. Any guesses?
Maybe a question for Mr. Hall himself, if he can disclose this info.
Maybe a question for Mr. Hall himself, if he can disclose this info.
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Russ, NCNE