I have a quality pocket watch (18 ligne) in a gold hunter case. The movement is fully jeweled with a Breguet (overcoil) hairspring and a micro adjustable regulator. The plates are brass coloured and the balance has regulating screws all round it. It is a lever movement. I think it must be of high quality because of the Breguet hairspring, these were not used in `run of the mill` watches. There is no make on the dial with its black arabic figures on a white dial with a subsiduary seconds dial at 6 o'clock. The only mark on the plates (that I can see) is a shield with the initials H & H over a capital D. I was in the watch trade back in the 1950s and 1960s and am very conversant with most makers of that and earlier era but this has defeated me. Inside the case back there is a logo that looks like a crown inside a circle and the gold mark of 0.585. The watch has come to light in Eastern Europe in the last couple of years but I would love to know who made it . Hopefully there is somebody out there that is very knowledgeable and can help me. Thank you.