RCA Nipper/His Master's Voice Salt and Pepper Shakers

RCA dog "Nipper" salt and pepper shakers. It faintly says "RCA HIS MASTER'S VOICE" around the base of each figure. The bottom says "Lenox," the maker. I believe the company is still producing salt and pepper shakers today. The closest to a date I've been able to find is anywhere between 1950 and 1960. His Master's Voice was a painted acquired by a gramophone company of the same name in 1899 for a logo and promotional use. In the painting, the dog is actually looking into a phonograph cylinder, rather than a gramophone. I have seen variations of this set where there is one dog and a gramophone/phonograph instead of two dogs. The image is still used by the related RCA company. Nipper is the name the dog adopted.