Longhorn Cow’s with a Hereford Bull Antique Painting: Longhorn Cow's with a Hereford Bull 'Longhorn Cow's with a Hereford Bull'. Oil on canvas 26.5 x 20 Inches. Unsigned Circa 1840. PAINTING ID : B0194 ARTIST : Unsigned Please Note : This painting has been sold Thank you for browsing our Gallery, if you are unable to see what you are looking for please call our gallery direct on 01509 503 276. Alternatively click here to complete our contact form or even browse our Instagram for more!