Wanted - Tail Light Assembly for 73 Penton Trials

[Cal Alexander]

I'm looking for an tail light for a Penton Trials. I'm restoring a very nice original bike with the 5 Speed Sachs and cast iron cylinder. It has the lighting kit on it but is missing the tail light assembly. Not sure what the original tail light configuration was as so very few were made. Thanks in advance for any leads / assistance!