Archived posting to the Leica Users Group, 1997/06/16

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Subject: Re: Black or Chrome?
From: Paul Schliesser <paulsc@eos.net>
Date: Mon, 16 Jun 97 18:16:17 -0400
 
>Quick question - are the chrome M-models using brass as well?

They are both zinc. The chrome lenses are brass, because you can't 
chrome-plate aluminum. They nickle-plate the brass for corrosion 
protection under the chrome. This is the reason why the chrome lenses are 
about 1/3 heavier than the black ones.

- - Paul