SEIKO by SEIKO MATSUDA (松田 聖子) has sold 200,000 copies in Japan.
SEIKO certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of | |
 Japan |
200,000 | 1x Gold | August 1990 |
Japan Sales: 200,000
Certification / note: 1x Gold
Certification Date / sales as of: August 1990
|
| Total sales | 200,000 | (in 1 country) |
Total
Sales: 200,000
(in 1 country)
|
Year-end chart performance for SEIKO
| Chart 1990 | Rank | Sales |
| Japanese Albums (Oricon) |
70 | 192,330 |