I purchased these great butterflies from a local estate sale.  The prior owner had two of the pink buckles attached - one to a 1" ivory leather belt and the other glued to a 1" round 3/4" height piece of what appears to be blue PVC pipe with a gold rim.  

Each set of belt buckles is a butterfly separated into 2 pieces in the mid-section. The pieces clip together in the middle. The backs have 2 nice metal bars that run from the top to the base of that section (wide enough for a 2.5" belt).  

The butterflies are 3" high and about 2.5" wide (with the sections clipped together).  They are made of very nice strong gold toned metal with enamel embellishments.  

I would certainly consider selling as a lot or in any combination you desire. They can be used in a variety of ways - a shoe buckle, a necklace, of course belt buckle, a scarf clip, etc.  

Just let me know what you want and we can work out a plan. Feel free to send messages.