Airship Ring

Description: This is a ring I created using brass propeller and filigree, mounted on vintage pocket watch spring casings. The filigree bit was purchased from an antiques dealer, but I have no idea where it originally came from nor how old it is. Propeller does turn when moved by hand, but this ring is otherwise not a machine nor mechanical in any way. Propeller turns within a space of 7/8-inch.