The Mark Hamill celebrity doll depicts him as Luke Skywalker in the original trilogy of Star Wars.  The 12 inch action figure was made by Hasbro in 1996 as part of the Star Wars Collectors Series.  The Luke Skywalker in Bespin Fatigues and Luke Skywalker in X-Wing Gear are also in the collection.

From the box:

STAR
WARSâ„¢

COLLECTOR SERIES
Raised on the planet of Tatooine by his aunt and uncle, Luke Skywalker lived the simple life of an innocent farm boy, unaware of the incredible destiny he would eventually fulfill.
Luke dreamed of leaving Tatooine to join the Rebel Alliance in their fight against the Galactic Empire, but his chores as a moisture farmer kept him at home. The young Skywalker spent the majority of his free time flying skyhoppers and landspeeders, learning the skills that would eventually evolve into those of an expert pilot. He also practiced target shooting by blasting desert womp rats, and with his friends, dreamed of adventures that seemed light years away.
His humble beginnings changed almost overnight after his uncle purchased two droids from the Jawas, unaware that one of the droid’s memory banks had been secretly programmed with holographic message from a mysterious princess. With this, Luke’s quest to fly for the Rebel Alliance would become a reality. The young farm boy would grow up fast as he began his training with Obi-Wan Kenobi in the ways of the Force.
Authentically styled straight from the movie, Luke Skywalker is fully poseable and comes outfitted in the modest shirt, pants, boots and utility belt he wore on Tatooine, included is the lightsabler Obi-Wan Kenobi gave him, which had once belonged to Luke’s father. The electrobinoculars he used to scan the wastelands are also included, as is a powerful blaster. This special edition 12″ figure, available for the first time ever, is destined to become a classic collectible.
MAY THE FORCE BE WITH YOU!

The Hamill action figure comes wearing a linen cotton karate style jacket pinched at the waist and held together with two snaps.  Over that is a soft brown silver buckled plastic utility belt.   The long tan cotton pants have a velcro with snap front fly.and tuck into the knee high soft rubber tan boots.  The entire costume is removable and goes back on with relative ease–a very playable action figure.

The accessories include high tech binoculars, a machine gun, and a blue light saber.

The doll is articulated at the elbow, bicep, shoulder, hips and knees.   Head goes side to side only and wrists and torso are fixed.  The elbows are internally snap click jointed.  The feet are soft and bendable to facilitate boot removal and the ankles are fixed.

The Celebrity Doll Museum has many 12 inch Star Wars action figures in the collection.