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help identifying old capacitor

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rally

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Hello,

I'm trying to identify an old capacitor from a 1970's combo organ made in italy by the GEM music corp.

The markings appear to read FZ 75 though upon close inspection there is a bit of space between the 7 and 5 and I feel like I see a faint mark that might be a decimal point? As in 7.5.

It was on the power supply and has badly corroded. Though it looks white, it has a pinkish hue to it telling me it may have been red or possibly orange in color.

I've included an image. Any thoughts or help would be greatly appreciated.
 

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Maybe a silvered mica cap. Can you give us some approx dimensions?
 
that's what used to be called a "Sandohm" an early version of ceramic wirewound resistor. 7.5 ohms is the value. (Sandohm was actually a brand name, but it stuck as a generic term)
 
What use for it?

What was the actual use?
 
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