Certificate of Provenance & Condition
Authenticated by LensSeed
Contax / Yashica
YUS 28mm f2.8
Authenticated
Condition assessment
AWeighted across
three axes
three axes
Optical5/5
Mechanical5/5
Cosmetic5/5
Certificate №LS-68A5F1CAB58B
Serial403750
MountContax/Yashica
Focal length28mm
Max aperturef/2.8
Issued22 June 2026
Honest defect disclosure
DustMinimal
HazeNone
FungusNone
SeparationNone
Coating marksNone
Oil on bladesNone
Scan to verifyLS-68A5F1CAB58Blensseed.com/cert
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