Philips 2531 radio from the 1930s with external speaker

Beautiful Philips 2531 radio from the 1930s with Casaphone receiver separate from the speaker, known as the Chinese Hat, working and in good condition.
Year of construction 1929 - 1931. 4-valve reaction receiver E442 E424 C443 506, general reaction principle (with regeneration); 1 BF stage No. of tuned circuits 2 Amp. Mod. Circuits (AM) Wave ranges Medium Waves (OM) and Long Waves (OL). Power supply voltage =220 Volt External speaker called “Chinese hat”. Materials: Bakelite. Shape Box ornament with lid called “Tabacchiera”. The receiver overhauled and restored in the cabinet is in perfect working order. In order to function, the receiver must be connected to the speaker and connected to an antenna, as well as to the mains voltage.