In January 1979, this method was abolished, and certifications were instead based on unit retail sales: sales of 60,000 were awarded silver, 100,000 for gold and 300,000 for platinum.
Sales of 60,000 were awarded silver, 100,000 for gold and 300,000 for platinum. In January 1979, this method was abolished, and certifications were instead based on unit retail sales.
In January 1979, this method was abolished, and certifications were instead based on unit retail sales. Sales of 60,000 were awarded silver, 100,000 for gold and 300,000 for platinum.
In January 1979, this method was abolished, and certifications were instead based on unit retail sales. Sales of 60,000 were awarded silver, 100,000 for gold and 300,000 for platinum.