Values are called out on the schematic. C18 = 30 mf, C19 = 25 mf, C20 = 20 mf. You could use 33 mf @ 160 volts for each of these.
http://www.nostalgiaair.org/PagesByModel/584/M0013584.pdf
Norm
:This radio/phono needs new electrolytics and the schematic posted here doesnt have any parts listing to show the values of the 3 electrolytics. Does anyone have a suggestion on what to use?