Galvanized steel disc with holes and a knob on one side.
This filter is one component of a milk can strainer used on the Samuel Diedrich homestead near Byers, Colorado in Arapahoe County. The homestead is designated as one of Colorado's centennial farms, having been a working farm for over 100 years in the same family. The property was homesteaded in 1906.
No inscription on this object.