Guess what ?
Yesterday i went to check on the seller that sold me the hand cannon, as i knew he had a British cavalry sword for sale. It happens that he didn't take the sword to the fair, i guess not to expose it to the cops, due to the recent arms law. But then i noticed he had another cannon, same as the previous one, eventually in a better condition. Before my surprise, he told me he had in fact acquired two of them ... only that he cared to take to the fair one at a time. I couldn't resist to instinctly buy it, even not being sure i will keep it. My budget is not so relaxing

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This one is a bit conical to the muzzle ( the other is slightly flared) and its bore mouth is in a much better condition.
Fernando