No, I ask and see if he has any pictures. Much of the fine details of this gun I fear have been lost to time. We are lucky the two remaining tubes did not get scrapped. I have invested a lot of time trying to find one of the Italian naval guns somewhere it Italy, but no one believes any of those remain after they were replaced with breech loaders.Did he send you anything on the construction of the ignitor/fuse. That is the sticker.
As an interesting side note, this is the only known gas check. That would be a cool relic to have, though it belongs in a museum in Gibraltar or Malta.