I have 3 Thonet original chairs with the markings. Pictures available
They have been in the family for as long as they have been owned, that I know of, passed down through generations
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Based on the photos and information provided, and subject to examination, this is:
A set of three antique Art Nouveau bentwood cafe sidechairs
made by Thonet Brothers, Vienna, Austria, early 20th Century
Each with a bentwood open-work back, circular plank seat and bent legs joined below the seat with a curved box stretcher; with stamp marking.
$60-90 for the group of three*
*represents a fair-market value for auction purposes; retail or asking price may vary.
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