There are only five "observatory dial" ref. 96s with subdial at nine o'clock all in
link steel and only two have
link dial signatures. One "observatory dial" sold in 2014 at Antiquorum for over CHF 100000. That watch had a strange configuration with luminous hands five minute lume track and indices individual minute dots and a round signature at three o'clock. But what retailer was "E. Bonnard" Well it wasn't a retailer
link at all.