A French Japy Freres & Cie. Beaucourt argentan key wind and key set pocket watch , some time after ca. 1850 for 0.99p The glass is in rough shape, but may be polish-able , and the dial, similarly is pretty rough. The adjuster is worryingly skewed, suggesting the balance shaft is possibly damaged, but for the price, I can't complain. It is obviously also in dire need of a clean and service. (source) More about Freres & Cie. here.