The New Era knob is most commonly paired with this vented disk and spring.
No matter how long ago you bought your Vacumatic Waterless cookware we could match up your handles.
Over the last 50 years there have been many styles of Vacumatic with about ten different styles of handles and we still stock most of them.
If these handles were plastic from Asia they would cost about 2 bucks, but these are high quality Bakelite, made in USA, so they are not cheap. We hope you will get another 30 to 40 years out of them.