Most banks don't bother. Also, most counterfeit pound coins are made from redirected planchets (blank coin base) intended to be used as Swazi lilangeni (or just

Most banks don't bother. Also, most counterfeit pound coins are made from redirected planchets (blank coin base) intended to be used as Swazi lilangeni (or just restriked lilangeni), so they are identical in size, weight, and material composition to legitimate pound coins (since they use the same planchet).