FYI - last I saw Porsche was still selling them & also had the pass. side type with the slightly convex mirror (rather than flipping a drive side one upside down) as of about 2010-11 when I got a pair for my resto. Probably Sunset Porsche in OR or Suncoast Porsche in FL will have the best discounted pricing at their online parts websites, over the non-Porsche resellers.
Stoddards, 914Rubber, Sierra Madre Collection, Auto Atlanta & some others may have repros too, but I think they're only left/driver type with flat glass.
Good Luck!
Tom
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