First impressions The cabinet is in good condition with faintly visible water circle on the top. The crackle painted front was painted over with black paint. The radio still has the metal strips that hold the lower part of the chassis in place. In this model, the speaker is mounted on a wooden panel. The speaker cloth is torn and the cloth covering the two round holes in the sides is missing. The cardboard and the lower metal part of the back panel are missing. The loudspeaker has a hole that can be fixed. The volume control has been replaced and is interrupted at three-quarters of the winding. It still works, but the other way around. The knob is missing. The tube set is only partly original: a E447 instead of the E452T and a 1823 rectifier instead of a 506K. Restoration The cabinet and the chassis of the receiver were cleaned and dusted. The two 470 pF mains-filter capacitors were invisibly replaced by two new ones of 4700 pF / 1000 V using the existing enclosure. Cleaned the holder of the scale indicator bulb (poor contacts). Connector pins were bent slightly outwards. A 12 Volt bulb was used. Replaced by a more appropriate indicator (6 V, 0.45 A). The valve set is now completely original. The front aerial socket was loose in the pertinax bottom plate. Glued with superglue. The spring tab in the grid bus of the detector was broken. Soldered. The contacts of the wavelength switch were dirty, so tuning was not working properly. Cleaned. Resistances were measured. Here and there some deviation but nothing serious. The capacitors in the capacitor block were  measured, using the multimeter. The values deviate here and there, but the real leakage can only be determined using the operating voltage. AC measured. The transformer works fine. The scale indicator works. The rectifier was plugged in. C1 and C2 each deliver 309 volts DC at 220 volts AC; no immediate leakage of the capacitors. The anode current of the output valve is 233 volts, the tube uses 15.4 mA; voltages across R6 and R7 are 0.12 volts and 0.71 volts, respectively, indicating a small leak of the capacitors C3 and C4. The screen grid voltage is 124 volts. The anode current of the detector is 124 volts. Hum resistor tuned. The transmission of the secondary tuning was loose, only the scale moved, not the tuning capacitor itself. Fixed. The radio works! The hole in the loudspeaker cone was repaired. Replaced speaker cloth and cloth covering the two round holes in the sides. Replaced volume control and a reproduction volume control knob. The silver cardboard part of the back was reproduced, using an original part. Still to do The lower metal part of the back still has to be restored. And perhaps the most difficult of all: recover the crackle paint used on the front.