As a Corvette owner myself, it's a grail that I'm sure will always remain just a grail.Juliet - Titanium - Ruby Corvette with lens etching. Not a prototype but a commemorative 50th anniversary pair from Oakley to Corvette drivers, only issued in this manner so never available to the public. There are at least three etching styles that I know of, and have read somewhere on the O Review that there were five different etchings within the 50 pieces made. Certainly a grail pair elusive in the extreme.