The best coin that I have is a 1954 s Ms66rd PCGS graded penny. Second on the list is probably my 1944 d/d rpm.
All that my Grandfather gave me! Which include over 100 foreign coins that I have never gone through that he collected while overseas!
I have been collecting a long time and am blessed with my fair share of nice coins. But the half that is in my avatar takes my breath away. Perfect flat strike. Perfect image and fields. And came to me from another CT member.
I have posted this coin several times it's my favorite coin because it belong to my Grandfather and he carried it everyday it's more valuable to me then my whole collection almost. Dave
Not the most expensive coin I own, and not the rarest coin I own, but it is my favorite coin because it was my first ancient coin Alexander the Great AR Tetradrachm Minted under Seleukos I Nikator (305-289 BCE) Babylon Mint