6455321 is the part and color combination code (or ElementID) for this part in Light Nougat color.
Minifigure, Head Dual Sided Medium Nougat Cheek Lines and Wrinkles, Nougat Eye Shadow and Lower Lip, Black Bushy Eyebrows, Gold Glasses, and Open Mouth Smile with Teeth / Reddish Brown Bushy Eyebrows and Neutral Pattern - Vented Stud