LEGO Yellow Minifigure Head with Smirk and Stubble Beard (Recessed Solid Stud) (14070 / 51523)

LEGO Yellow Minifigure Head with Smirk and Stubble Beard (Recessed Solid Stud) has been used in at least 107 LEGO sets over the past 19 years, since it was first used in 2005. You can also find this part in at least 3 other colors. It has the design IDs 14070, 51523, 95560 which can usually be found molded into the bottom of the part.