I would stay away from that instrument. I only saw one many years ago. But I remember it was a “primitive” mechanism, and very different from any other maker of harps, which means it would be difficult and expensive to have replacement parts made for it. If it was made in the 1930’s, then it is now about 80 years old and probably very decrepit. As a harp rebuilder, I would not agree to work on it. I don’t want to take on the responsibility of maintaining an instrument that would be very difficult and time consuming to work on, and which would very likely need constant fussing to make it playable at all.