Zenith Model H511 tube radio, please help with identifying value of ceramic capacitor

I am repairing a Zenith Model H511 tube radio 1951 model.

It has a brown disk ceramic capacitor that has the numbers

22 (dot) 5 in blue letters. < that is a (dot) not a (period)

There are not other markings.

I have looked at a few capacitor numbering data sheets
on the web but I am still not sure about the value.

Is it a 2.2 microfarad ?

Any help would be greatly appreciated

Thank You


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