This is Lego set 10143 The Death Star II. It is used and it has been displayed. There is no pieces count in the back of the book, but I've counted the pieces from an online source and unless I've made a mistake, it is complete.
The pieces have some light wear, but are in overall very good used condition. The sticker with the nameplate is a bit worn, especially on the edges. The manual is included, but it is spiral bound and quite worn. A lot of the pages are coming off the spirals.
There is also quite a bit of other wear, but it is useable. The back of the book ends with the finished piece, but it ends abruptly and may be missing the back page? This comes unassembled in 6 sealable bags as pictured. The item "LEGO Star Wars 10143 Death Star II Complete, No Box" is in sale since Friday, March 20, 2020.This item is in the category "Toys & Hobbies\Building Toys\LEGO Building Toys\LEGO Complete Sets & Packs". The seller is "nie5728" and is located in Indianapolis, Indiana. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Liechtenstein, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Pakistan, Paraguay, Reunion, Uruguay.