Nice find! The color of the canopy on the helmet sides is alaways a question without a clear answer.
I exchanged many letters with Rakkasans veterans since few years and, according to themthe canopies were white, yellow and even one wrote me orange.
I know how it's could be difficult to remember a such detail, more than 50 years later...
By the way, that's a great helmet!
Is it named? I have 187th yearbooks....