was struck in...

In other words, because the coins struck in Philadelphia were mixed together with the rest that were struck at West Point, which is where these coins are usually struck, and since the bullion coins do not carry mint marks, there is no way to know where they were actually produced.

As a result of this situation, the major grading services have announced that they will not be encapsulating any 2015 Silver Eagle coins with labels indicating that they were minted in Philadelphia.

You only need a 2015 period. Bought ours in in 70 for $60 including shipping, wayback in 2015 - you should not pay more