Glad you said that.
Philadelphia has never used a mintmark on copper - ever.
1914 is worth 25c to a few dollars depending on grade, and the others are common wheats...but still somewhat unusual finds in rolls today - especially in Canada.
1953D - I have 5 rolls uncirculated, and 14 rolls of AU++ circulated coins.
1956D - I have 27 rolls uncirculated, and 21 rolls of AU++ circulated coins.
Contrast...
1914P - I have 1 roll plus 12 coins of F-VF or better.