I've just bought this item and am answering my own question in order to help others. It's the TLE (Tubeless Easy) version of the Schwalbe Pro One in 700x28C, Black/Black.
According to the manufacturer, the TLE bicycle tyre: The TLE tyre is specially designed for tubeless use without an inner tube and thus offers by far the best performance. TLE tyres must always be used with sealant.
Due to different purchasing conditions and changing suppliers over a certain period of time, price changes/fluctuations may occur. We generally work with daily prices.