I found some old antique milk (white) glass tea cups w/ saucers. How can I tell if they are worth anything?

Question:There is a symbol on the bottom that looks almost oriental, but more like an "H"

Also, they seem to be an old milk glass, almost see through. Has a fruit design on them, grapes and vines?

They were found in a friend's Grandmother's home with some other vases that the family kept because they were heirlooms.

Serious answers GREATLY welcome, and appreciated.

Answers:
You can check ebay for similar items, or take a cup and saucer to an antique shop that deals with glass and ask them for information. It sounds like it might be a depression era glass. Look also for seams on the glass. That suggests that it was molded glass. Not all molded glass will have seams showing though. Grapes and vines were very common designs in depression era glassware.