Certificate of Provenance & Condition
Authenticated by LensSeed
Cosina (Cosinon)
Cosina (Cosinon) : 50 mm, f2
Authenticated
Condition assessment
ABWeighted across
three axes
three axes
Optical5/5
Mechanical5/5
Cosmetic4/5
Certificate №LS-3F88EF4A35F7
Serial90306650
MountPentax K
Focal length50mm
Max aperturef/2
Issued22 June 2026
Honest defect disclosure
DustMinimal
HazeNone
FungusNone
SeparationNone
Coating marksNone
Oil on bladesNone
Scan to verifyLS-3F88EF4A35F7lensseed.com/cert
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