Any Idea What these are? (S Kirk & Sons)

I cannot figure out what these might be: each is 9 inch long; 1/4 in. wide; set of 12 of them in special pouch; marked S. Kirk & Sons; each ‘thing’ marked STERLING and weighs .40 oz. They seem too long to be something like a collar stay, and also in general, too flexible/flimsy to be “stays” . My effort to upload a photo has failed :frowning: