These snap fasteners are getting very hard to find and modern ones are often not small enough for dolly garments. These are size 00 which are about 6mm, so good for small things. I use these all the time, and prefer them to newer versions.
Price is for the two cards and there are 44 snaps in total
Please note these notions are all genuine vintage, so they will have flaws commensurate with their age.