The visible marks are; crowned V a later tax mark used 1814-1893. Crowned O a later tax-free mark used 1807, and ET conjoined under a crown
The crowned ET(conjoined) duty mark of the French empire used 1809-1819. ET= étranger=foreign. This mark also used as tax free census mark, without guarantee on the standard of fineness. This mark also occurs rather frequently on objects bearing the older marks of Dutch guilds and the duty marks of the Kingdom of Holland, and the 1807-1812 Kingdom of Holland proper hallmarks.
The town mark, year letter and maker's mark appears to be indistinct/rubbed out. The tobacco box, looking at style and quality could have been made in the city of Schoonhoven, late 18th century.
For an other example made in Schoonhoven see:https://imageshack.us/a/zKV4/1
For the marks see:http://www.925-1000.com/forum/viewtopic.php?f=5&t=32028