dear Zebedeus, yes they are missing, but that's exactly what I like about this item!!!,
there are a lot of period photographs of spikeless pickelhaubes with spikeless uberzugs, and in several reference works uberzuge without the spitze (or to be more precise a separate spitze-uberzug) is documented,
I have a couple of uberzuge al of them have the cover for the spitze attached tot the cover for the helmet body, this is my first one without it.
with the introduction in 1915 of the M15 helmet with detachable spitze also an uberzug without the spitze was introduced, but this is the first one I encountered (and happily was able to lay my hands upon),
So I think this variant is much more rare than the usual one, (as I never see it for sale either on militaria fairs, nor on websites like weitze)
I attached some Photographs as an illustration from the above mentioned reference books and some period photo's
(from " die feldgraue Uniformierung des deutschen Heeres" , and from " les coiffures de combat de l'armee allemande" (both excellent reference books)
sorry for the spelling errors, my spelling check tries to convert everything back to Dutch...