[手稿] [数学] Thoman, H.J. Arithmetici in Lindau erneuertes Hauss und Kaufmännisches Rechen Büchlein "Siebente viel vermehrte und verbesserte Auflage mit hochobrichkeitlichem Privilegio Lindau im Bodensee in Verlag Jacob Otto"。奥托印刷作品的当代手稿副本，（1765 年），400 页，当代盲纹小牛皮，皮革领带残余，4 开本。装订时附有一些空白页。封面褐变（因翻转而偏移），还有其他一些小瑕疵。显然是对印刷作品逐字逐句的仔细复制。

Composed of several subsidiaries, the Drouot Group is a major player in the art market. Hôtel Drouot, located in the heart of Paris, has been the world's largest public auction center since 1852. 15 salerooms are available to more than 70 auction houses. The emulation generated by an annual offer of 230,000 artworks from 21 major specialities - from Antiquity to street art - attracts some 3,000 visitors every day. The Group's digital platform, Drouot.com, offers digital sales - Live auctions (live broadcasting and participation in auctions), Online-only auctions (dematerialised auctions) and Buy Now sales (sales of lots at fixed prices). Nearly 2 million items are offered annually by 600 auction houses. Auction news is reported every week in La Gazette Drouot, the leading weekly magazine for the art market and culture published by Auctionspress.