Certificate of Provenance & Condition
Authenticated by LensSeed
Contax / Yashica
Yashica ML 50mm f1.7
Authenticated
Condition assessment
ABWeighted across
three axes
three axes
Optical5/5
Mechanical5/5
Cosmetic4/5
Certificate №LS-71C0A97BBCE3
SerialA20151490
MountContax/Yashica
Focal length50mm
Max aperturef/1.7
Issued22 June 2026
Honest defect disclosure
DustMinimal
HazeNone
FungusNone
SeparationNone
Coating marksNone
Oil on bladesNone
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