Regulator by Erwin Sattler, so-called roof clock. Mahogany. Straight, highly rectangular, three-sided glazed body made of narrow bars with moulded cornice and roof finial. White enamelled dial with small seconds, marked Erwin Sattler. Movement with lever escapement and half-hour strike on gong. H. 99 cm. 27 cm x 17.5 cm. A German mahogany wall clock. Gräfelfing. Erwin Sattler. Late 20th century.