I have been looking for a decent Woodland Pattern Helmet cover for awhile and found one on Ebay from the mid eighties in very good condition. This is a cotton cover with all the correct markings on it.
I also recently won a 65 Dated Helmet and liner from Trademe. I only realised that it is missing the headband when it arrived. I have stuck the Woodland cover on it and will look for a later dated Head band for it.