That is an interesting collection of coins, from a Croatian Nikola Tesla coin (how many cents is this one?) to the US penny, to what appears to an old French Franc coin!
Actually, that is not a collection, but a simple box where I stock little coins to make changes.
The Nikola Tesla is 50ct. I have no clue what the US penny is doing here, since I've never crossed the Atlantic (probably a merchant's confusion with little copper € cents). And it's a 1/2 Franc ("new" indeed, "old" Franc being far older).