Navy blue hat with classic intertwined "TC" red and white embroidered logo on front. Interior leather headband retains proper New Era Pro Model manufacturer's label with additional 7 1/8 size flag tag. "3" written in black marker under the bill with Killebrew having signed the hat in blue sharpie (under bill) and silver sharpie (leather headband). Includes letter of provenance signed by Killebrew confirming use of the hat during the 1972 season in which he surpassed Mickey Mantle's 536 career home run total. Includes LOA from Hunt Auctions (hat), LOA from JSA (autographs) and signed letter of provenance from Killebrew: EX-EX/MT