Out of the eight sake cups, one is made of wood. I don't know the era or where they were made, but I've uploaded close-up photos of the footed bases of three of them, so please take a look. The wooden one has an engraving on the body and something written on the bottom, but it doesn't seem to be the place of origin or the name of the maker. Each one is different, so I hope you enjoy them. I don't see any chips or cracks in particular, but they are not new and have been stored in a warehouse for a long time, so please refrain from purchasing if you are concerned.