Cheney was a competitor (lower end) to Victrola. However, that said, they were taken to court by Victrola many times for patent infringement. In the end, the court ruled in Cheney's favor. Cheney was funded and distributed by the mega Marshall Fields Store.
The round medallion plate is what was typically mounted to the front of the Cheney wooden cabinet (the cabinets was made in Grand Rapids Michigan - by Berkey & Gay Furniture Company). There was a square metal plate that had a the Style # and Patent # that was located inside the cabinet. Cheney produced many styles of cabinets well into 1925 (year Mr. Cheney died). So...your medallion could be from anywhere in that time range forward.