Doing some research on Heuer 8 days timers and found some reference to an Arogno Cal. 28 (for instance here: https://www.bukowskis.com/en/auctions/600/12-heuer-master-time-8-days-and-monte-carlo-stop-watch-dash-mounted-timepieces-57-5-x-57-5-mm and here https://www.worthpoint.com/worthopedia/heuer-master-time-rally-timer-68-75-1899562099). This brand has managed completely to evade me but also the internet. Anyone who has a pic of this movement? Even Ranfft does not have one