Some were very simple, no noes cap, no entry thimble, no side plate, no butt plate. Some may have a toe plate or a comb made from bone or antler. And just a grease hole and no patch box.
Others were very fancy, noes cap, entry thimble, a southren butt with extra long comb, pierced toe, complex side plates.
Most were iron, a few Brass, some iron and boasting silver inlays
Your historically correct to go fancy or plain