Somewhere around Dec '72 Porsche replaced the red banjo horns with red trumpets. The Carrera RS Book (2nd Ed) specifically mentions red Klaxon dual tone horns. Like in the picture below. However most vintage (and the current OEM) horns for sale these days seem to have Mixo in place of Klaxon lettering and are otherwise identical. Both say Stritone at the bottom. So question for the illuminati. Which is correct, and if both, for what era or what car?

Ravi

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