Front
Method
Border
Left / Right
49.0 / 51.0
Top / Bottom
56.0 / 44.0
Yaw
+0.05° CW
Corner Readings · Millimeters
Top Left
X 2.50 · Y 2.70
Top Right
X 2.60 · Y 2.90
Bottom Left
X 2.50 · Y 2.20
Bottom Right
X 2.60 · Y 2.20
Official Grading Record
2023 · Obsidian Flames
Condition Profile
RBH Grading Standard
Centering
9.0
Corners
9.5
Edges
10.0
Surface
10.0
Supporting Documentation
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Released Grading Record
Border mode calculates centering and yaw from the recorded corner-border measurements. Landmark mode calculates LR/TB from direct design-landmark distances and records yaw independently when a reliable horizontal or vertical reference is available.
Dimensional measurements are recorded manually in millimeters and are subject to an approximate ±0.1 mm measurement uncertainty. Clockwise yaw is positive (+); counterclockwise yaw is negative (−). “Not measured” means no reliable yaw reference was available.
Method
Border
Left / Right
49.0 / 51.0
Top / Bottom
56.0 / 44.0
Yaw
+0.05° CW
Corner Readings · Millimeters
Top Left
X 2.50 · Y 2.70
Top Right
X 2.60 · Y 2.90
Bottom Left
X 2.50 · Y 2.20
Bottom Right
X 2.60 · Y 2.20
Method
Border
Left / Right
52.4 / 47.6
Top / Bottom
50.4 / 49.6
Yaw
−0.03° CCW
Corner Readings · Millimeters
Top Left
X 3.30 · Y 3.50
Top Right
X 3.00 · Y 3.50
Bottom Left
X 3.30 · Y 3.40
Bottom Right
X 3.00 · Y 3.50
Where dimensional measurements are shown, values are recorded manually in millimeters and are subject to an approximate ±0.1 mm measurement uncertainty.
Where dimensional measurements are shown, values are recorded manually in millimeters and are subject to an approximate ±0.1 mm measurement uncertainty.
Documented corner, edge, and surface conditions associated with this grade.
Where dimensional measurements are shown, values are recorded manually in millimeters and are subject to an approximate ±0.1 mm measurement uncertainty.
2 Blemishes
Blemish 01 · Corner
Rear · Top Right
Isolated Touch / TickBlemish 02 · Corner
Rear · Bottom Right
Isolated Touch / TickCertified
September 15, 2026
Record Revision
3
This digital record is tied to the exact eight-digit certification number printed on the RBH label. RBH does not expose customer information, grader notes, or private scoring weights in the public registry.