Thanks, the photos do tell a lot. I've never seen a cannon just like that one. However I'd definitely estimate the time of manufacture to be no earlier than about 1840. No Revolutionary War or 1812-period cannon I've seen had lines like that one. It looks like somewhat of a take-off of Dahlgren/Rodman guns. The cascabel is way oversized compared to mid-19th C military cannons. I think it is more likely to be a locally-cast signal/salute gun, as those often had oversized cascabels, and I've always thought that in the U.S., small, non-military cannons like this were much more likely to have been made for signaling or celebration than for use as weapons.
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