Where it comes from
The line in the source
2011年3月末時点で全世界で251億枚以上を販売 Explore / Figure
Record
Cumulative cards sold (Konami JP restatement), as of 31 March 2011
25,100,000,000 cards As of 31 March 2011
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.