Just to clarify at the beginning here, I did not make any of these collars.
My aunt gave me these several years ago while doing a house clean out/reorganization, and I adore them.
The buttons are meant to go on the back.
I thought I would share for some inspiration. I love the details of the tiny thread-crocheted collars, and the floral details on that last one, especially. I always mean to wear them more often, but either forget or can’t seem to find something in my closet that has a neckline and style to work with them. They would look great over a simple, solid-color smock or a-line dress. Or over a simple t-shirt with some jeans and flats.