Found this one today!

[Hydrantman]

Well I got skunked for silver on 3 boxes (with 1 left to open) but I did find this in a roll of halves.

 

[XX]

Those are the same cupronickel composition, size, and weight as regular halves. They get by all coin counters. It's worth 50¢ face value.

 

[TT]

I too have found those...let me know if ya want anymore.

 

[jewelerdave]

I think I read somewhere that these are actually legal tender in the US just as US coins are legal tender in Panama
The US mint makes them for panama. I doubt most people know this but its interesting, its worth 50 cents at least unlike all the Mexican un peso coins.

 

[Cerulean]

I found a 1993 Medio Balboa in a box of halves, too!

I love finding foreign coins, and I wish I had more of them.

 

[TxTim]

Nice!
Those are fun to find.
I think I have at least 10 of them - common here for some reason.