Synonym or breeding number (also GM 9-97) for the grape variety Osteiner; see there.
The white grape variety (also Geisenheim 9-97) is a new variety between Riesling x Silvaner, which has been confirmed by several DNA analyses, most recently in 2018. Count Friedrich Karl Maximilian von Ostein (1735-1809), who had the Ostein'sche Palais and a landscape park built in Geisenheim, was honoured...
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Fachjournalistin, Lektorin und Verkosterin, Wien