Can anyone decode the markings I have on my Varilux Panamic lenses? They are on the lower right and left sides of the lense and can be read from the front of the lense. The outer mid entry is O the lower entry is 20. The inner mid entry is O and the lower is <o>, with the O having something in side. I'm curious to know the meaning of these and would like to validate these are Panamic lenses.
Thanks,
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