Vintage Kenner Star Wars ESB Boba Fett 21-Back. This is the earliest release of this figure on an ESB card and is very rare and desirable. ESB 21-Backs are some of the most sought after on the market.It has gone through AFA grading and gotten a very high grade of 85 with s. These are our property and were taken from our website. Be sure to check out our other listings. Dd us to your favorites list. And may not be used without prior permission. The item "Vintage Kenner 1980 Star Wars ESB Boba Fett 21-Back AFA 85 (85-85-85)" is in sale since Thursday, October 10, 2019. This item is in the category "Toys & Hobbies\Action Figures\TV, Movie & Video Games". The seller is "hollywoodheroes" and is located in Westwood, New Jersey. This item can be shipped worldwide.