Great Britain 1891 Liversedge Yorkshire Mills Advertising Stationery Cover

2&1/2d rose postal stationery cover, with advertising for Cook & Sons & Co, with illustrations of Brussels & Power Kidder Factory, and Spinning Mills of Liversedge, Yorkshire, postmarked with London hooded c.d.s. (8 MY), to Rotterdam, Netherlands, with c.d.s. arrival backstamp, lovely quality.