03-16-2015, 08:30 PM
I have a 610 and don't think I have ever seen one of those. At least my radio doesn't have one. Looks like it might be some sort of light shield to prevent light from leaking from around the tuning knob.
Certainly does not appear to be a critical part as I have never missed having one.
Certainly does not appear to be a critical part as I have never missed having one.