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Black felon with polarized lenses? One on Craigslist near me. Not sure if it's my style but they're going for $70
 
They changed the name to M Frame after some legal issues with using the Mumbo name, I can't remember the full story.

An old o-review quote:

"The M Frame has evolved from a replacement for the Blade System to the modern piece of sports equipment we know today.

In late 1989, Oakley released the Mumbo (as most names then still had long titles) as a form of self-competition in order to phase out the Blades, but still keep sales high with the new model. The Mumbo was originally designed with straight stems like the Blades, however just prior to their release, Jim Jannard took the stems and 'hammered' them into the shape they soon became and thus providing the name 'hammer stems'. The patent for the decorative design had already been submitted, so these record show the original design. The straight stem release did remain for the Sub Zero's two years later and for the Baseball specific M Frame models.

The three original lens shapes were V, 67 and Hybrid, which was roughly an approximation of the two. In 1990 soon after their initial release, there was a conflict with Mambo clothing over the name, so it was switched to the M Frame while still keeping the term Mumbo on the box in order to lessen confusion over the name change."
 
I know it's not a pair of sunglasses and I can't even believe I'm looking stuff this but... There's a 12 pair storage case finished jn "carbon fiber" with red,white and blue O for $150 near me. What are these things worth?
 
What would value be on a jupiter factory lite? Just has a regular hard square O case. Lense is 8/10. Frame 10/10

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JI serial Juliet. New nosebridge. All new rubber parts. With brand new Revant lenses. Anybody give me a ballpark price?

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JB serial Juliet. New nosebridge. All new rubber parts. With brand new Revant lenses. Anybody give me a ballpark price?

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That's a JI. JB would be Polished with hammer stems and arguably worth more.

The lenses are worthless (to me) so for a frame with rubbers and fresh tune up I'd say no more than $225-$250. That being said I sold one without rubbers a week or so ago on eBay for $290.
 

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