Does anyone know the dimensions of the 1 kilo Silver cast bars? I bought one off a Gumtree seller recently and it seems to me its fake. The bar is very grainy everywhere apart from the front face. The thickness isn't 22 mm as stated by the Perth Mint. I have done a neo slide test it doesn't slide fast straight away at a 45 degree angle. When i move the magnet back and forth to feel the field in mid air it i do feel a resistance. Opinions greatly appreciated. Pics attached soon.