Cosco folding chairs

I have a set of four of these "gate" folding Cosco chairs.  The vinyl is in great condition (on chair has one small tear).  The paint is copper/gold in color and is in great condition, also.  there are three rungs on the back of the chairs and they have a vinyl "wrap" that can be removed with it's snap.  the seat is formed and there are no wrungs on the legs.   Stamp on the bottom says COSCO 11 3 72 .  there is usa patent number i can't make out and the canada one is 554764