Where it comes from
The line in the source
"productTitle": "拡張パック「破空の激闘」", "releaseDate": "2008年 7月10日（木）", "description": "カード／11枚(うち、キラカード1枚)" Explore / Figure
Record
JP expansion-pack release date, 10 July 2008 | 2008 | year to February 2009 (Mar 2008-Feb 2009) | print-year Apr 2008-Mar 2009
10 July 2008 10 July 2008 | 2008 | year to February 2009 (Mar 2008-Feb 2009) | print-year Apr 2008-Mar 2009
FiledTaken from a filing, a registry or the company’s own published page.
Found in one pass only. The research team reads every source twice, independently; this record turned up in one reading but not the other, so treat it as less certain than its grade.