
JACOB & CO. / QT100.20.NS.AA.A
Quenttin Tourbillon — titanium56 × 47 mmTitaniumLimited edition; quantity not established by the sourceHistorical
Rectangular tourbillon watches, represented by an exact dealer-documented reference.

Photographs follow the cited record. Shared source illustrations are labelled. “Current” and “Historical” are shown only where the source supports that classification; other entries are marked “Era not confirmed”. Catalogue coverage & sources