Could you please help me identify what I found?
I don't know much about numismatics so I'm sorry if this is a wrong place to ask this question. I found these today. I think my grandfather got them in the US back in the 70's, what are these exactly? I only managed to find out that Michigan National Corporation Bank no longer exists, so if they are bonds or something they probably are not worth much anymore, right? Pic http://bit.ly/2oMoLVJ
Submitted April 30, 2017 at 10:25AM by Kbx44