John ,you are always scaring these things up ..... honestly i've seen two of these public displays .
one on ambergries caye belize , a pitifull example of a VOC type gun mounted on a concrete corroded too no end .
and a really nice gun on a holland america cruise on the 'ryndam' .......a swivel gun i geuss , but the bronze patina just amazed me .....wish i'd have studied it more .......
the bunch i was with would look at me like i was stupid ....for giving it more than a passing glance .
Holland America = cruise of the living dead ..........