Four-five years ago I embarked on a quixotic quest to inventory all the pocketwatches made by Thomas Engel, a hopelessly, hopeless whack. The fruits of my futile labor appear in my article: Never Mind the Bollocks…Here's Thomas Engel...the Ka of Breguet. Based on available literature, auctions, museums, kind strangers, dumb luck etc. my article documents (for the lack of a better word) or rather lists two-score Thomas Engel watches largely assisted by Manfred Rössler's article «Thomas Engel: Taschenuhr-Chronometer Im Stile Breguets» (Klassik Uhren October/November 2011, see enclosed).
Manfred Rössler states in his Zenith book (Damiani, 2009): "A general overview of the chronometers Prof. Engel made with Zenith movements is sadly not possible anymore. Many documents and papers were stolen during a break-in in Prof. Engel's house...it is to dread that the thieves destroyed all written papers."
Making the vexing venture all the more puzzling is Thomas Engel's often befuddling numbering system, e.g. there is Tourbillon No. 4 & Tourbillon No. IV, two Tourbillons marked No. 1 & a Regulator marked No. 1 and Regulator No. 10 (IWC movement) & Tourbillon No. X (Zenith movement).
Recently, one of the handful of readers of my Thomas Engel article was kind enough to share an auction (2022) of a Thomas Engel Tourbillon that neither appeared in Manfred Rössler's Klassick Uhren article nor my article (a mortal lapse on my part). The watch is Tourbillon # 13 (circa 1981); almost certainly Richard Daners did the tourbillon work. The auction description reads:
Seltene Tourbillon-Taschenuhr von Prof. Thomas Engel, Aesch 1981 Gelbgold und Silber, gest. 750. Rundes Uhrengehäuse, verschraubter Boden, verglaste Werkabdeckung, äußerst fein guillochiertes Regulatorzifferblatt, mit schwarzen römischen und arabischen Zahlen, gebläute Breguetzeiger, Gangreserve, kleine Sekunde. Ankerwerk mit Tourbillon, Werk Nr. 13. Herstellerzeichen. D. 56 mm. Gew. ca. 189,13 g.; Ergänzend Buch von Thomas Engel
For the curious the watch is enclosed.