I thought that at first also but the area above and below the building is depressed very deeply outlining the building perfectly. My first thought was maybe someone carved it out so I weighed it, it weighs 4.98 The depth gradually get deeper from bottom to top but the building seems to be at the right height for the coin. It has a very defined ridge around the building. I'm scratching my head. Ill try to get some full pics for you.
































