The Winchester model 88 rifles were manufactured without recoil pads. They would have had recoil pads installed later especially in the 308 Winchester. They did not come from the factory with a recoil pad and this does hurt the gun considerably for its collecting value. That was probably one of the main issues with those firearms.
I ran across this info on the net....Factory red recoil pads were added on early 1900..pre 64 rifles..as a factory option..not on 88's....U could buy them from Brownells and have it added by a gunsmith....