Interesting fact, there are 46656 combinations that could be added to this coin if using a standard 26 letter alphabet, 10 numerals and 3 placeholders.
1.7 million roughly if using 4 placeholders
*NOTE: This auction is for our standard mint coin only, which comprises the majority of our 2016 Bitcoin Penny™ commemorative coins. In addition to our standard mint coin, we will also be minting an EXTREMELY LIMITED special mint coin with the initials "SN" (for Satoshi Nakamoto) below the date. We hope this RARE and SPECIAL coin variation adds a little of the classic "coin roll hunting" fun to the Bitcoin Penny™ experience. Our 2016 Short Rolls (20 coins) will each contain 19 standard mint coins (with auction winner's initials) plus one (1) special mint SN coin, while our new 2016 Classic Roll (40 coins) will each contain 38 standard mint coins (with auction winner's initials) plus two (2) special mint SN coins. In addition, we will be producing new 2016 Limited Edition Rolls which will each contain FORTY (40) of our special mint SN coins. Production of our 2016 Limited Edition Rolls will be limited to ten (10) rolls only. Once again, this auction is for our standard mint coins only, which will comprise the majority of our 2016 Bitcoin Penny™ commemorative coins.
It looks like this should answer your question
1.7 million roughly if using 4 placeholders
*NOTE: This auction is for our standard mint coin only, which comprises the majority of our 2016 Bitcoin Penny™ commemorative coins. In addition to our standard mint coin, we will also be minting an EXTREMELY LIMITED special mint coin with the initials "SN" (for Satoshi Nakamoto) below the date. We hope this RARE and SPECIAL coin variation adds a little of the classic "coin roll hunting" fun to the Bitcoin Penny™ experience. Our 2016 Short Rolls (20 coins) will each contain 19 standard mint coins (with auction winner's initials) plus one (1) special mint SN coin, while our new 2016 Classic Roll (40 coins) will each contain 38 standard mint coins (with auction winner's initials) plus two (2) special mint SN coins. In addition, we will be producing new 2016 Limited Edition Rolls which will each contain FORTY (40) of our special mint SN coins. Production of our 2016 Limited Edition Rolls will be limited to ten (10) rolls only. Once again, this auction is for our standard mint coins only, which will comprise the majority of our 2016 Bitcoin Penny™ commemorative coins.
It looks like this should answer your question
It doesn't for me, I doesn't say you actualy win a (or several) standard mint coin(s). The way I read it is what you win is that your initials will be minted on all standard 2016 coins, not that you will win/receive any of these coins.
or 