Although it's old and shows considerable wear, I'd like to offer it to someone who needs a specialized book. A mark was made on the first page, which has been covered with paper (see photo 4). Technical data book providing detailed technical information on the PC-9800 series. - Title: PC-9800 Series Technical Data Book - Supported Models: PC-9801/E/F/M/U/UV/VF/VM - Publisher: ASCII Publishing - Price: 4600 yen - Number of pages: Thick Thank you for looking.