knobs for Moto VT-71, 73

[blacksmith]

Hi,
I'm the guy who made the masks for these sets. I have some questions about the knobs for these sets since I'm not a T.V. collector.

Are the knobs the same for these two models?

I've just finished making molds for the three types of knobs used on these sets. The examples I have are a sort of mahogany color. Did some of these Motorolas use a different color?

Answers to the above questions would be great, but what I really want to know is what percentage of these sets have missing knobs. I'm trying to determine how many of each type of knob I should knock out, and whether it's worth messing with at all. I've had a few requests for these knobs, but that could be all I'll get.

Any help here would be appreciated.