Three small screw covers

Made:
1929
maker:
Sherard Osborn Cowper-Coles

Three small screw covers, 15mm diameter, sherardized by Cowper Coles in 1929.

Details

Category:
Metallurgy
Object Number:
2002-114
Materials:
metal (unknown)
Measurements:
: x .5906 in.; x 15 mm
type:
three sherardized screw covers
credit:
Mr. Peter Cowper-Coles.