Are they all 1931? What are the different dates for the different coins? I'm guessing the florin is 1931. It is in fact silver. Irish florins from that era are pretty rare. VF condition for that coin is worth $30-40 dollars. EF condition for that coin is worth around $200. These are retail values, not what you can sell them for. You could probably get 50-70% of what it is worth.