Gibraltar SG41 1901 2d Brown-purple and Ultramarine on cover to England

1901 (MR 5) cover to England franked by 1898 2d brown-purple and ultramarine tied by GIBRALTAR / A26 duplex. Oldham arrival backstamp (MR 10). Minor envelope crumpling at left still fine and very scarce. Original Purchased from Stanley Gibbons (Still on their card)