Hello Krisztián,
It's nice to see you posting down here in the East Asian section for a change.
The mark looks like WH. If so, that's Wang Hing and Co of Hong Kong, as listed in the CES section of World Hallmarks:
http://www.925-1000.com/chinex_04.html#MIt seems to be missing its original glass or porcelain bowl.
You probably already know that British import marks are for London 1898, which corresponds with Wang Hing's dates. I am not certain if the importer is Marples and Co, Maple and Co, or someone else, but an expert in that area should be able to identify it if the mark is moved to the London Forum.
Cheers
DR