Amazing Piers, what a vast array there is.. We are very lucky to have you on NMB!.
Do you know if all those cannon were manufactured in Japan ? .No expert, some look Japanese and some Western, i guess maybe influenced by Western Cannon around at that time, especially the one on the Naval carriage. One reminds me of a lantaka.
A lot to take in, appears quite a few could come under the "swivel cannon" type.
A really nice ornate cannon, looks bronze.
Like the one on the carriage with the wood stock., that's fantastic, i want one.
Lots of various cannon balls/shells. They actually remind me of that Sherman round from ww2.
Absolutely amazing collection, id have a field day in there lol