For your consideration, here is an Old Ice Capades Chalet Skating Basic Skater Pinback Button, Pin.  It has some wear on it and a rust spot on the edge.  There are some spots on the back.  The button has a diameter of 1 5/8 inches.  Item pictured is the actual item up for sale and comes from a non-smoking household.  (567.5o-.4px2)