My apologies, I didn't know that misery had set in.
It is the swinging lid that belonged to an ashtray.
The ashtray had three parts to it. First, the swinging "trap door" lid. Second, a metal surround with disk-shaped cigarette rests into which the swinging lid fit. And third, and a tin box upon which the lid rested, into which the smouldering offerings were received. Only the swinging lid bore the Hayashi patent mark, so presumably the patent was for the design of the lid.
The Hayashi ashtray I have seen was one component of a smoking set, that is, a portable wooden box with handles that contained a small mass-produced porcelain hibachi, a match holder, and the metal ashtray, all of which were fitted into compartments of the box. The box could be hauled hither and thither wherever smokers might go. Hayashi smoking sets were factory-packed two units to a storage box, so it is safe to assume that Hayashi was the man who solved one of humanity's great riddles and "built the better ashtray," then proceeded to market it as part of a complete smoking set. One can only imagine the sad lot of the scullery maids who had to set these out every night, and empty them every morning, at plebeian inns and teahouses all over Japan.
I can hardly reiterate in strong enough terms that the likelihood of this ashtray lid being silver is close to nil. For one thing, the two I have seen for sale, which had lids marked identically to the one posted here, described the metal parts as "rusty." For another, this ashtray was mass-produced and marketed to the masses domestically. And for a third, I cannot imagine venerable Hayashi-sama leaving "pure silver" or even "silver plate" off of his brilliant invention while stamping on his name and patent number for all the world to smash their butts upon.