Made by Illinois, this is a super rare model, only 3,623 produced during 1903, even rarer under a private label, you have to wonder how many still exist. Working and was tested over a 20 hour period and kept very good time. It may need a service to keep absolute perfect time. The gold plated case is 54.1mm in diameter. 1903 Illinois, Private Label, Grade 65-E, Model 6, 17J, 18S, lever set, stem wind, 4 adjusts, double sunken dial with date serial number1688096. Dial has a faint crack between 12 & 1, very nice case.