Front
Method
Landmark
Left / Right
52.5 / 47.5
Top / Bottom
48.2 / 51.8
Yaw
Not measured
Landmark Readings · Millimeters
Left
4.20 mm
Right
3.80 mm
Top
4.10 mm
Bottom
4.40 mm
VerifiedReleased Certification
Official Grading Record
Sylvan Library
2026 · SPG
Condition Profile
Published Subgrades
RBH Grading Standard
Centering
9.5
Corners
9.5
Edges
9.0
Surface
10.0
Supporting Documentation
Official Inspection Record
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Released Grading Record
Centering
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.
Rear
Method
Border
Left / Right
47.9 / 52.1
Top / Bottom
49.6 / 50.4
Yaw
−0.04° CCW
Corner Readings · Millimeters
Top Left
X 2.90 · Y 3.50
Top Right
X 3.20 · Y 3.50
Bottom Left
X 2.90 · Y 3.50
Bottom Right
X 3.10 · Y 3.60
Corners
Where dimensional measurements are shown, values are recorded manually in millimeters and are subject to an approximate ±0.1 mm measurement uncertainty.
Edges
Where dimensional measurements are shown, values are recorded manually in millimeters and are subject to an approximate ±0.1 mm measurement uncertainty.
Blemishes
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.
6 Blemishes
Blemish 01 · Corner
Whitening / Fraying / Ticks
Rear · Top Left
Isolated Touch / TickBlemish 02 · Corner
Whitening / Fraying / Ticks
Rear · Bottom Left
Isolated Touch / TickBlemish 03 · Edge
Rough Cut
Front · Left
Light Visible Cut TextureBlemish 04 · Edge
Rough Cut
Rear · Bottom
Light Visible Cut TextureBlemish 05 · Edge
Whitening / Fraying / Ticks
Rear · Bottom
Localized Visible FrayBlemish 06 · Surface
Print or Refractor Line
Front · A1
Trace Non-Human-Observable LineCertified
October 5, 2026
Record Revision
1
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.