Does an old wristwatch inscribed 'Montblanc' come from the Hamburg writing-instrument manufacturer, and does it have a watch history before 1997?

Before 1997, Montblanc Simplo GmbH did not produce watches; older watches with the inscription 'Montblanc' come from an independent Swiss watchmaker, which is now insolvent. When Montblanc Hamburg entered watch production, the trademark rights for the watch name 'Montblanc' were bought from a Swiss watchmaker, whereby Hamburg has been allowed to appear in the watch segment under its own star since 1997. From a pure collector's view of Montblanc writing instruments, the old Swiss watches are not relevant; their historical value and their connection to the brand history can nevertheless be interesting.