I recently came across someone who was looking to part ways with their redeemed 25
BTC Cas.
I am looking for help on evaluating the overall price of this particular coin. I have never came across one before, both I and the seller are confused as to what a fair valuation is.
Does anyone have any idea what it could be worth?
What would you yourself pay for such a piece?
Images of the front and rear of the coin in question.