WHO IS SPORTSCARD GUARANTEE CORPORATION (SGC)?
Sportscard Guarantee Coporation (SGC) have been in the grading an authenticating game for over 22 years, making a name for themselves as the leader in vintage card grading. In 2018 SGC rebranded themselves and made the audacious move to all black slabs and a 10 point grading scale. Buckling down during the pandemic and ramping up their operations, SGC have been able to offer value based grading with reasonable turnaround times, usually around 30 business days.
WHAT DO SGC DO?
Sportscard Guarantee Coporation (SGC) authenticate both sports and non-sports trading cards across all eras. SGC are renowed for vintage cards but have quickly become a leader in modern and ultra-modern base cards.
SGC GRADING PROCESS
Interested in having a behind the scenes look at the SGC grading process? Take a look at this walkthrough with President of SGC Peter Steinberg.