Certificate of Provenance & Condition
Authenticated by LensSeed
Zenit
Montgomery 28mm f2.8
Authenticated
Condition assessment
BWeighted across
three axes
three axes
Optical4/5
Mechanical4/5
Cosmetic4/5
Certificate №LS-58157A298A6F
Serial24089
MountM42
Focal length28mm
Max aperturef/2.8
Issued22 June 2026
Honest defect disclosure
DustMinimal
HazeNone
FungusNone
SeparationNone
Coating marksNone
Oil on bladesNone
Scan to verifyLS-58157A298A6Flensseed.com/cert
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