Help With Beautiful Silver Cup?

I picked up this piece at an auction, but there was no background info on the item. I was wondering if anybody knows anything about it. It measures 13 cm in height and 13 cm across. On the bottom, HB is stamped and 39W is engraved. It weighs 618 grams. I would really appreciate any help you can give to me. Thanks, Ckeats77
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What could HB stand for?

please give me something

I guess nobody has anything useful to say. There are no real clues to composition or origin. Without any indication of fineness (e.g. “sterling”, “925”, etc) we don’t even know if it is silver.