Topps NFL Sonny Jurgensen is a prime example of how scarcity drives the sports card market and with only 3 PSA 10s known to ...
In his video posted Thursday, Sewell, using a series of charts, uncovered why grading ... the top 12 rookie base cards given a PSA 10 grade only date back to 2018, with the pandemic giving ...
The market has decided that a gem-mint PSA 10 grade carries a value premium ... which compile and chart sales data, but charge subscription fees for advanced info. PSA’s official app also ...