The Eastern Jewelry Manufacturing Company - also known as Coro - produced a wide range of costume jewelry for the original release of Alice in Wonderland. Pictured below is the page from the Character Merchandise Catalog for that line.
It pictures a total of 9 different items, some of which appear to have been sold in pairs as the pins pictured along the right side of the page share inventory numbers - all pairs included an Alice and another character.
There are some holes in the numbering, one can speculate about the missing items - and for certain I have an item not listed on this page that could very well fill one of those holes. Stay tuned over the next few days for more details on this line of jewelry.