 The 5-florin was replaced in 2005 with a round gold-coloured coin, because the old square 5-florin coin was too easy to counterfeit.All coins are struck in nickel-bonded steel with exception of the 5-florin, which is an alloy of copper and other metals.The 50-cent is the only square-shaped coin remaining, also commonly referred to as a "yotin" by the locals.