Quote: "907Novice"Ok, that's fine. It's just not consistent with the way other years are listed.
Maybe it would help to know the history of these Bullion Coins without a mint mark. Below is a quote from usacoinbook.com. In short, the US Mint hid the identification of which coins were struck at which mint from the public causing obvious confusion.
Due to strong demand for bullion Silver Eagles - the US Mint began minting these in San Francisco in 2011 to help supplement production and keep up with demand. People knew about them being minted in San Francisco because the Mint used to provide this information on the packaging. However in 2014 - they removed this information from their packaging. Because bullion silver eagles never have mint marks struck on their coins - it was impossible to determine which mint was producing the coins.
NGC began to notice small differences in the quality of the coins - particularly the West Point coins being of higher quality. West Point silver eagle coins are placed into tubes by robots - while Philadelphia and San Francisco coins are put in tubes manually. NGC also noticed differences in the serial number codes on the 500-coin "monster boxes" that silver eagles are distributed in. Due to a Freedom of Information Act request - the Mint released Mint identification information based on these serial numbers:
