I had a brand new, sealed LCII. Sold it, but I did open it up to remove the battery. Luckily I did, it was on the verge of leaking. Anyway, there was not screw in back either. It did come with two power cords which never made sense to me since the power supply is single port, unlike the IIcx for example. By the way, if that is all proper NOS, then there is a packing list in there.