I've three types of magazine holders, all white cardboard, as shown in the pictures.  The type with the white/non-metal label holder (right image in the picture with two holders shown), I've seven of those; and four each of the other two types.  Most of these have either not been used or only used for a short time before I discarded 100s of magazines earlier in the year.  As it stands, I've no use for them now.