Examples of five sizes of miniature ball-bearings on a display board: 1958. In a plastic box
1958
Motorcycle hub
1928
Motorcycle hub
1928
Ball bearings in cage from steering head
1993
Ball bearings in cage complete with washer
1993
Five ball bearings, 1990-96.
1990-1996
Board with specimens showing stages in manufacture of D.W.F. ball bearings
1912