➀ BU20.30 series, BB10 series Main Repair Manual August 1977, Part Number 62406 ② Same series, Main Wiring Diagram Collection August 1977, Part Number 62408 ③ Same series, Wiring Diagram Collection Supplement April 1979, Part Number 62422 ④ Same series, Wiring Diagram Collection Supplement November 1980, Part Number 62441 ⑤ Dyna Wiring Diagram Collection Supplement April 1982, Part Number 62453 ⑥ Coaster Wiring Diagram Collection Supplement May 1982, Part Number 62451 This is a set of 6 books. Overall, there is dirt, yellowing, stains, page folds, wrinkles, wear and tear on the covers due to use, fading, and discoloration. There are some handwritten notes on several pages of the repair manual (①), and there is a tear at the bottom of the cover. Also, there are stamp marks on the edge of the wiring diagram (④), and there is writing with a marker on the edge of the wiring diagram (⑥). Please consider this, understanding the condition of the items.