This is a 1996 Star Wars Collector Series 12-inch Boba Fett action figure by Kenner, hand-signed on the front display window by Boba Fett actor Jeremy Bulloch. 
Item title
Star Wars Collector Series 12" Boba Fett Figure – 1996 Kenner – Signed by Jeremy Bulloch “Boba Fett”
Key features
Original 12-inch Star Wars Collector Series Boba Fett figure by Kenner, released in 1996 as part of the large-size Collector Series line.
Factory-packed figure with detailed Mandalorian armor, soft-goods jumpsuit, removable jetpack, and blaster rifle, displayed in the original flip-open window box packaging.
 
Front window is boldly signed in blue ink by Jeremy Bulloch, the actor who portrayed Boba Fett in The Empire Strikes Back and Return of the Jedi, with the added “Boba Fett” character inscription. 
Bulloch passed away in 2020, making in-person autographed figures like this increasingly scarce and highly sought after by Star Wars autograph and vintage toy collectors. 
Box shows light shelf/handling wear consistent with age, but figure and autograph display beautifully; ideal for graded encapsulation or centerpiece display in any Boba Fett or Original Trilogy collection.