I had my clock converted to a quartz movement by Instrument Services, Inc. in Roscoe IL. They also replaced the stem and knob which was missing. I'm sure they will sell you a knob. They are at 800 558-2674
I just had my clock restored by 'the clockworks'. They have original or quartz movement. NOS Borg movement also available. Price for original was under 50.00 I was happy with the service(one day turn around) Phone 800-398-3040, clockwrks.com, 1745 META LAKE RD, EAGLE RIVER WI 54521
Prior posts on this topic. I used the Clockworks for a quartz conversion for my 69.
Redrum (or Mike)
68 Corvette - 383 CI, 427 HP, 700R4, 12.56 @ 108 MPH
69 SS Chevelle - 502 CI, 610 HP, 2004R, 1320 unknown
97 Z-28 - totally stock still under 12,000 miles
How does an attorney sleep?
First he lies on one side, then he lies on the other.