Whirlwind Rolls-Royce Engine Data Plate…

Once again there’s only the one photo of the Whirlwinds data plate… I’ve enlarged it by 200% here and enhanced the image, I’ve posted both a positive/negative image to show up the details. Shame nearly one have is obscured by the spade grip…

Can anyone tell me if Rolls-Royce used a standard data plate for all their engines and just filled in the relevent engine data that the aircraft used?

I’ve already tried R-R Derby who said they haven’t any information on the data stamped on the plates used in the Whirlwind…