Hi,
It looks like Fa. Dahlia, Amsterdam.
http://925-1000.com/forum/viewtopic.php?t=28590They produced a wide variety of items, including smoking accessories (like your ashtray). They were decorated with Old Dutch scenes. An interesting business deal took place with German lighter manufacturer Karl Wieden .Silver or silver-plated lighter sheets (cases) depicting Dutch scenes were imported to Germany and vice versa, but I am not aware of the full scope of cooperation helping to identify the maker with both ``KW`` and Fa.Dahlia mark or `
` DORGENTO`` with full Dutch marks, as seen here. Without official Dutch marks it`s silver-plate ashtray 1920-1958.
This is all I can tell. An interesting topic and looking forward to see other comments.
Regards
