If you want Concours perfect new/NOS, then they still sell it by Porsche at dealers & the typical suppliers, since it's the same mirror used in the 70's 911/912E/930 - so Porsche Classic keeps production up.
Sunset Porsche up by you sells them at a good discount on their parts website FYI. Some member vendors like SMC, GPR, etc. also carry them.
PS - Don't forget to order a few of the 3M double stick mounting pads for it too, as you'll certainly need another spare pad or two in the future (they're usually only a few bucks).
Tom
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