Why PSA 9.0 ranks highest
Based on Underval's historical market data, PSA 9.0 currently ranks highest based on its overall balance of long-term performance and market activity for Koffing #51 from Base Set Unlimited. With an estimated fair value of $40, annual growth of 42.4% (inflation adjusted), approximately 28 days between sales , over 3 years of historical data, and 37 tracked sales, this grade currently ranks highest across Underval's historical grading model. This ranking is intended for research and educational purposes only and should not be interpreted as financial or investment advice.