Master cavalier wet electric cooler value?

Hi.
I hope you can help me.
I just acquired a vintage Master Cavalier Wet
Electric Cooler circa 1930’s - Chest type. I believe
it is a model CM-6W or an FE-6 according to a
picture I saw in a manual.
It is in unrestored, working condition with a couple
of dents. It is complete even with the cap catcher
and drain hose.
How can I get some info on it and perhaps a value?
Can you guide me to a place to get info, please?
Thanks for your assistance.