[falcon123]

if they are defective i would think that a silver/mica would be fine. the large values can be had in silver/mica. i did have some micamolds in a HALLICRAFTERS that were almost black around the bandswitch that indeed looked like mica ''domino's'' but were paper foil as i broke them in half to make sure. they were called out as paper in the i.p.b. i dont think that philco would have made a mistake but anything is possible i guess. i realize its apples and oranges but i thought i'd throw it out there. i looked in an online 1938 philco catalog and couldnt find your p/n for the 5300 pf,but i also couldnt find any paper/foil in a domino either of any value.