Vintage 1960 Blue Tuxedo Button Slides 7 pcs

Vintage/retro tuxedo shirt button slides in great condition! All slide and spring-back except one, which slides but does not spring back. Doesn't seem like it would affect it's use, however. Raised resin domes in vibrant cobalt blue. Two of the button slides have higher domes than the others (maybe these are for the cuffs?). The remaining five domes are not as high, though one of the five is higher than the other four, but not as high as the two highest (maybe this is for the top of the neck??). Slides measure 1 inch across. China plate the button slides are displayed on is NOT included. I ship same day, too!