Here is a nice tall round embossed half pint milk bottle from the Crystal Brook Farm Dairy Farms Farm Dairy Farms Dairy Farm dairy farm that once was operated and located somewhere in historic USA.  Front says, "Crystal Brook Farm Registered Pure Guernsey Products.  This authentic milk bottle is from 1916 and is in excellent condition with no cracks, dings, chips, and only minor casewear as seen in the pictures.  A nice addition for the collector of milk bottles. The exact location of this dairy is unknown to the seller at the time of the listing.  This bottle has begun to turn a purple color as seen in the pictures.