Looking for a source for this rear view mirror
That specific one?, nope.
I would go to various auto parts places, trailer places, maybe "general consumer stuff" (Walmart, Target, Tractor Supply, etc. in the US or Canada) places and look around.
They are usually inexpensive (a few $US) and can be had in many shapes and sizes.
They may be a mirror replacement, they may also be an addon for trailer towing, etc.
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