I am a 20 year collector of American Pocket Watches, and recently found what I believe is a European Watch due to the movement style, but have no idea who made it. It’s a full hunter, key wind movement with only the Star of David engraved on it. Does anyone have any information on this watch? Manufacturer and possibly a date? I picked it up at an estate sale for a price I couldn’t say no to. It sets, winds, and runs good, and gained 8 minutes from n 24 hours. Any help will be greatly appreciated!