How can i tell whether a black m frame with the gen 1 logo, ie oakley rather than the O, is an original mumbo or an m frame that it fazed into after the mumbo era finished.
Im aware that the mumbo only came in the neon yellow, white and black, but the black continued over into the m frame.
There are quite often black gen 1 frames come available for sale, but how do i know which it is?
Can i get them, put in a gen 1 lense, ie hybrid or 67 and call them mumbos?

See this thread:
http://www.o-review.com/portal_detail.asp?ID=9026