I hope this is all accurate.  It is almost certainly not complete. 

Top view

* parts per million per degrees Celsius ( ppm/C ).

          For some MIL and EIA molded micas, voltage ratings were determined by value and case size.  The temperature drift specification included minimum insulation resistance and drift over time. 

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http://www.vcomp.co.uk/components/cap_codes/cap_codes.htm 
http://www.radioremembered.org/capcode.htm