Very Rare! I bought these new back in the mid 1970's when I lived in Mammoth Ski Area. Only used them once, maybe twice, as evidenced by the wrist straps. Then I moved away and injured my knee so never used them again. They are in great condition. Poles are straight. Only minor scratches on them. I had put some used narrow baskets on them which show a little use, which can be changed to whatever you prefer.
They are Kerma Gold Medal SST 'Champion Du Monde' (World Champions). Made in France! Very Rare anymore. They also made a racing pole which came out at the same time. These are traditional design. They were THE top of the line back in the 70's!
These measure at 48" total length, which can be used by someone about 5' 8", or possibly 5' 9" if you have long arms. You can also have them cut shorter to fit if needed.
I live out in Walterville but come into town every few days and could meet up somewhere convenient for both of us.