Vintage set of salt and pepper grinders, in oak Denmark 1960s

Very rare vintage set of salt and pepper grinders designed by danish designer falle uldall in oak for dane wood in the 1960s. There is plenty of evidence online of the origin of these grinders, but none of them are stamped on the bottom. They are otherwise completely original with the same equipment and have a brass locking mechanism with a black and white enameled top. They are both 19.5 cm in height and 5 cm in diameter. Minor signs of use and light wear. Price is for the pair. Packed securely and shipped with insurance.