They are "Dakaware" brand knobs and are still available. Do a "google" on "daka ware knobs" and you will get some hits.
Glen, K9STH
Website: http://k9sth.com
--- On Sun, 2/14/10, Jim Johnson <jsab29 at bellsouth.net> wrote:
I have a Collins 32V-2 that I need a set of knobs for. The tuning knob is ok. Does anyone know of a source.