Thread: New Purchase: German Hohenzollern Thuringian

Just bought this stone off of ebay and so far I love it. I have refreshed six razors with it so far and it has done a beautiful job. I would like to know more about it. The seller thinks it was produced around the 1880's. Does anyone know where I can confirm this and where I can get more information about it? I have googled it to death and can't find any useful information other than Hohenzollern stones are well regarded. Thanks.