Mystery mechanism: Tom Haney's Philidelphia find

On a recent trip to Philadelphia, automaton-maker Tom Haney scored some great found objects. One them was the mechanism shown here. He doesn't know what it is nor do I. Can you identify this mechanism? If so, leave a comment or drop me a line.

See Tom Haney's artwork on his web site and check out his blog to see what he's up to.

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