I was looking at a 90mm f8 Super Angulon on Ebay recently, and the owner said he got it about 18 years ago, and so he assumed it was multi-coated, but he wasn't sure from the lens designation (I didn't ask him about the lens hue). Does Schneider, or any other lens manufacturer, have a start list on their serial numbers when they started multi-coating? Thanks in advance!
Claudio
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