Cabinet card studio portrait of professional boxer Jake Kilrain, shown full-length in a fighting stance, bare-chested and wearing light-colored tights with a sash at the waist. The image presents Kilrain posed with raised fists against a plain studio backdrop, a format commonly used for late 19th-century prizefighters to emphasize physique and stance. The subject’s name, “JAKE KILRAIN,” is printed in gilt lettering on the lower margin of the mount. The photographic process is consistent with an albumen print, and the overall presentation suggests a date in the late 1880s to early 1890s.

Jake Kilrain was a prominent heavyweight boxer of the bare-knuckle era and is best known for his participation in the final bare-knuckle world heavyweight championship contest, fought under London Prize Ring rules in 1889 against John L. Sullivan. That bout extended to 76 rounds before Kilrain’s trainer, Mike Donovan, ended the fight by throwing in the sponge. Kilrain’s reputation as a durable and resilient fighter made him one of the most recognizable figures of late 19th-century boxing, and studio portraits such as this were widely circulated among sporting audiences of the period.

The card is mounted on a dark-toned cabinet mount with rounded corners. No photographer’s imprint is visible on the front, and no studio credit is visible on the verso in the images provided.