1973 Truman medal query

Can anyone provide/direct me to info on this medal?

Any guesses on value?

Thank you.

 

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http://ie.picclick.com/HARRY-S-TRUMAN-1973-CUPRO-NICKEL-PROOF-PATTERN-182162816812.html

 

Thank you. I came across that, but looking for actual info on the coin, like from a reputable source, which would include members.

 

I posted it for others since you hadn't posted anything you had already discovered and knew about.

 

No problem. That was the only thing I came across (and another one for sale).