Four pieces including serial #16170984 dating to 1912, seventeen jewels, grade 383, model 2, class 113, serial #24273988 dating to 1921, seventeen jewels, grade 345, model 3, class 114, serial #6583269 dating to 1897, seven jewels, grade 109, model 1, class 60 and serial #20921486 dating to 1918, fifteen jewels, grade 444, model 4