prdubis Posted November 26, 2009 Report Share Posted November 26, 2009 Hi there, I had a look at gen 1665 pics, and the glass seems completely different from the one on MBW 1665 (much thicker). Is it a flaw on this rep or a thicker glass was an option or a different version of this SD? Thank you for your help! Quote Link to comment Share on other sites More sharing options...
vlaletom Posted November 26, 2009 Report Share Posted November 26, 2009 Actually the crystal from mbw is not so good. And it is higly sugested to buy a remplacement one form clarks(nostalgia 2000) on ebay, wich is a very good cheap alternative to gen. for the gen there are many variation of the crystal used. But you can classify them in 2 main familly "rounded tropic 39" aka superdome. wich is the original crystal whatch where delivered with. and "flat top tropic 39" which is the replacement cristal for service, this one has came in many tinny variation thrue the years, mostly conserning the beveled edge between the vertical and horizontal part of the cristal. The rounded form is much more resistant to preshure, and therefore was originaly used. But after some time Rolex must have considered that the flated form was quite capable to resiste 660 meter, and was less subject to difraction... hope this helps Quote Link to comment Share on other sites More sharing options...
freddy333 Posted November 26, 2009 Report Share Posted November 26, 2009 The crystal is just 1 thing that differentiates a $300 rep from a $6,000+ gen. Quote Link to comment Share on other sites More sharing options...
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