A set of two books from Keibunsha's encyclopedia series on space, released from the Showa to early Heisei eras. These items are from a collection being organized. ① Kimi wa Uchu Hakase da! Uchu Daihyakka (You're a Space Doctor! Space Encyclopedia) First edition: October 10, 1978 ・There are stains and yellowing on the cover and the main body of the book. ・The page in image 11 looks like it might split at the spine, but it should be fine if handled gently. ② Saishin Uchu no Nazo Daihyakka (The Latest Mysteries of Space Encyclopedia) First edition: August 20, 1991 ・The cover has some minor scratches and dirt, but there are no spine splits or writing, and it's in relatively good condition for a book over 30 years old. The unused questionnaire postcard is also included. Both books have been stored in their current condition for a long time, so they show corresponding signs of wear and tear. These are used items, so please refrain from purchasing if you are concerned about the condition. What do you think? ※ I also have old toys, figures, Tomica, sofubi, trading cards, records, Famicom games, Kinnikuman erasers, monster erasers, Showa retro goods, professional baseball chips, etc., for sale, so please take a look at my profile page (^○^)