1965–68 Harmon Killebrew Game-Used & Signed Hillerich & Bradsby Professional Model Bat – MEARS A8 – JSA LOA In Progress (Greenshields Collection)

Outstanding Harmon Killebrew game-used and signed Hillerich & Bradsby professional model baseball bat dating to the 1965–1968 period of the Hall of Famer’s legendary power-hitting career.

The bat has been professionally authenticated and graded by MEARS (Memorabilia Evaluation & Research Services), receiving a strong final grade of A8 with certification number 323836. According to the accompanying MEARS Letter of Opinion, the bat exhibits characteristics and use consistent with Killebrew’s documented professional gamers from the era.

MEARS notes include:
Moderate game use throughout
Bat rack marks and visible handling wear
Medium ball marks
Stitch marks present
Pine tar handle preparation
Correct uniform number designation
Player traits consistent with factory records and Killebrew professional models
Uncracked handle condition
35 inches / 31 ounces
Ash wood construction

The grading breakdown awarded the bat additional points for game use, player traits, and matching uniform number characteristics, resulting in the impressive final A8 designation.

The bat has been signed and inscribed “Best Wishes” by Harmon Killebrew along the barrel, adding excellent display appeal to an already significant game-used example.

The autograph was submitted to James Spence Authentication (JSA) during the 2026 Montreal Expo and has successfully passed authentication. The official JSA Full Letter of Authenticity (LOA) is currently being processed and will be provided to the winning bidder once received.

One of the most feared power hitters in baseball history, Killebrew finished his legendary career with 573 home runs, 13 All-Star selections, and an American League MVP Award. A cornerstone figure in Minnesota Twins history and a National Baseball Hall of Fame inductee, Killebrew remains one of the most collectible sluggers of the post-war era.

Authenticated game-used bats from Killebrew’s prime playing years remain highly desirable among advanced collectors, particularly signed examples displaying strong player-use characteristics and accompanied by respected third-party authentication.

Authentication & Provenance
MEARS Letter of Opinion – Final Grade: A8
MEARS Certification Number: 323836
James Spence Authentication (JSA) – Autograph Passed Authentication
Full Letter of Authenticity (LOA) in progress and will be shipped to winning bidder

This piece originates from the esteemed Greenshields Collection, a significant and carefully assembled lifetime baseball memorabilia collection built over decades. The collection features signed memorabilia, game-used equipment, and historic baseball collectibles, with items noted for their quality, consistency, and strong collector appeal.

Condition
The bat displays moderate professional game use throughout, including ball marks, stitch marks, rack wear, pine tar residue, surface wear, and handling wear consistent with on-field use. The handle remains uncracked. The signed “Best Wishes” inscription remains visible and presents well along the barrel. Overall presentation is strong, with excellent collector appeal as a signed Hall of Fame game-used example.

Details
Player: Harmon Killebrew
Team Era: Minnesota Twins / Washington Senators
Manufacturer: Hillerich & Bradsby
Model: Signature Model Professional Bat
Length: 35"
Weight: 31 oz
Era: 1965–1968
Wood: Ash
Game Use Authentication: MEARS A8
MEARS Certification Number: 323836
Autograph Authentication: JSA Passed Authentication – Full LOA In Progress
Provenance: Greenshields Collection