Unverified50% confidenceFactExact time
BGS's Black Label grade requires all four sub-scores to be perfect 10s; statistically, only approximately 0.5% of submitted cards can achieve this grade.
1
Sources
50%
Confidence
Long-term
Relevance
8/15/2026
First Seen
Sources
tash平台深度解析：交易卡如何变身另类投资资产
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