The frame is of solid and laminated beech and partially veneered in rosewood. The chair back was completed first in three dimensions using a two-stage process. It was then glued to the seat frame. Both cross struts are missing.
This piece of furniture was designed as a "Laufstuhl" (extremely lightweight seating) and should be considered as a link between Boppard I and the Lichtenstein chair. In addition to the groundbreaking technique that was used here for the first time, the chair is the first piece of furniture with an open seat back that owes nothing to the Biedermeier.
Seven examples of this chair are known.
I would like to thank the international circle of Thonetologists and, in particular, Mr. Heimo Keindl for making available the scientific study of our Boppard chair which was first made public at the last Thonetolgy congress.