Very strange multi-tool?

Another tool from my weekend auction. This appears to be some type of multi tool to be used with something. The working end swivels in the slotted handle part. Maybe missing a wooden handle or perhaps it was to be inserted into another part. Lots of little features on the working end. Looks like a couple little spanner tips, some type of curved mating area and a fold out flat blade screwdriver tip.

Any clues that would tell me what this is and what it was used for would be much appreciated.

Thanks.... Doug