Well...this cap don't have any piping...not red, not black...I would like to find a badge to complete the cap (even in this poor condition)...but I don't know what volunteers wore this cap...and I still have questions...in the book "Regimental badges and service caps" you can see that the only green cap with black buttons is the Queen Victoria Rifles, King Royal Rifle Corps, and you can see it with black piping...and other like Rifle Brigade wear gilding buttons...I don't know if is a mistake and brigades wear black buttons...or Artist rifles and some other regiments you can see in green colour in that book...that is why I need to know in your opinion wich badge or badges are the correct one for this cap...
https://gmic.co.uk/topic/40929-34-re...e-caps34-1941/