In 2014, the RCM started putting a maple leaf hologram and radial lines in their maple leaf. That is the essence of the KM#1601 variety. My confusion is why there are regular BU entries after 2014 in the KM# 625 variety. I have some maple leaf after 2014 that don't have the security features but they all have privy marks and somewhat of a "reverse proof-like" finish. I haven't seen any after 2014 that don't have privy marks and don't have the security features. However, the entries in the Numista database indicate that they exist. Do they?
https://en.numista.com/catalogue/pieces9164.html
KM# 625
https://en.numista.com/catalogue/pieces58596.html
KM# 1601