Origin of collar button
Examples from the Web for collar button
It took him some time to assemble these infrequently used accessories, and he was dismayed to find no collar-button.
Or that other mean man I heard of, who was so economical that he used a wart on the back of his neck for a collar-button.
Now he raised it and placed it against his chest, just above his collar-button.The Poor Little Rich Girl|Eleanor Gates
A collar-button was the corner-stone of his toilet—the object on which everything else depended.
A sudden tumescence of the ego and a furious exaltation of verbal powers upon losing a collar-button.The Roycroft Dictionary|Elbert Hubbard