This is a 1964 Red Mirror Proof Cent from the United States, featuring a grease error. The beard and partial hair struck on grease is the error.  Despite being ungraded and uncertified, this rare uncirculated coin holds value for collectors due to its unique characteristics and historical significance. 
I am posting 4 consecutive year pennies separately.  It is remarkable to all have the same grease error.  Buy all 4 for an incredible set to add to your collection.
#124