Only very few watches with this type of escapement arc known to exist. Among these, one is signed Beljean ~t La Neuveville (sold by Antiquorum in Geneva in October 1994, Lot No. 25), and another is signed Tschiffeli in Bern (sold by Antiquorum in Geneva in October 1996, Lot No. 213). The latter actually came from La Neuveville in the Jura bernois, although most of his work was signed in Bern, where he settled in 1760 and died on March 11, 1795. A third one is signed: Jullien Le Roy a Paris '' , (see article in Alte Uhren, N° 5, October 1993, by Hans F. Telke, pp. 11-13) without any serial number, but judging from the misspelling of the name and its layout, it is undoubtedly an apocryphal signature. The fourth watch of this type is signed: "Gering, Grelfswald,,. With regards to the maker Gering Greltswald, we have been given some important information by Gerd Arens, from Luzern, and Ernst-W. Evers, from Sparser, Sweden, which throws a new light on the horological history of Sweden. Pomerania, and consequently Grelfswald, became Swedish possessions in 1618 following peace with Westphalia. In the context of the New European Order, after the Napoleonic campaigns, Grelfswald was only annexed to the realm of Prussia in 1815. Daniel Gering had not therefore left his native Sweden when he moved from Stockholm to Grelfswald. This also confirms Jean- Claude Sabrier's theory, as per his article published in "L ' Horlogerie Ancienne", Bulletin de l'A.N.C.A.H.A. N° 19, whereby Gering of Grelfswald and the one in Stockholm who had become Master at the Watchmakers Guild in 1749 and died in 1797, were in fact one and the same person. Furthermore, in a publication by the Northern Museum of Stockholm, it is indicated that Daniel Gering, Master at the Stockholm Watchmakers Guild, died in Grelfswald on 26 June, 1797, at about 74 years of age. With regards to the double-wheel escapement, apparently made towards 1752 in Grelfswald by D. Gering: his name appears for the last time in the books of the Stockholm Watchmakers Guild in 1752. A very similar escapement was published in the Royal Academy of Sciences of Sweden 's quarterly report, 3rd publication of the year 1762, page 230: Description of the new fabrication of a pocket watch with seconds and double wheel escapement -imagined and presented by SAMUEL ANGVILIN Dean of the French Lutheran School of Stockholm. In the year 1746, the late Secretary, Mr. ELVIUS, came to collect from me a wooden, half-finished model of a newly made pocket watch with seconds, promising to submit it to the Royal Academy. Following his journey to Trollhiitt n, and his sudden death, I was not to meet him again. Since then, that model remained in the Chamber of models until I retrieved it to seek a skilled craftsman, able to complete the piece. I finally met Mr. Eric Lindgren, unknown as a watchmaker but who, despite the work and cost involved, as well as the possible waste of time should the task prove to be unproductive, eagerly accepted to finish the model with a view to acquiring public notoriety, which the so much needed. I would therefore ask you to consider the merit, capacities, care and hardship which he deserves in having made true improvements to this watch. I am proud to present this watch to the Royal Academy of Sciences. LINDGREN, ERIK (Eric) 1729 birth 1753 scholarship for further studies -in Paris (Le Roy?) 1754 (23/12) became Master of the Watchmakers Guild of Stockholm 1757 (09/06) authorisation by the Chamber of Commerce of Stockholm to establish a watch manufacture 1760 2 fellows et 4 apprentices 1776 Royal Warrant, Watchmaker to the King' s Court 1778 Dean of the Watchmakers Guild until his death 1786 (22/11) death It is known that watchmaker Erik Lindgren (1729-1786) was given a State scholarship for further studies in Paris (S. Sidenblath...), which by that time was common practice.