[NJARC] Rn-60, RN-55 etc ???

[Billoradio at aol.com]

I am sorting a bunch of light green/turquoise old stock Dale metal film  
resistors. These came in snap in black plastic 10 piece trays. I dont know what  
to believe about the RN codes. 
 
A web search gives inconsistant information.
Some are listed as
RN-55  1/4 Watt
RN-60  1/2 W
RN-65  3/4 W
RN-70  1 W
 
Then I saw some listed as
RN-65  1 W
RN-70  2 W
 
I found a package of Dales on a cardboard holder marked RN-55  that  had MF 
1/8 handwriten on the package at the factory.
 
Please set me straight.  I have about 3 or 4 thousand of these and  would 
like to use some and pass some along.
 
Thanks
Bill Overbeck