I like this glass - am especially fond of those beautiful upper case wheel engraved initials that meant this piece belonged to someone in particular, though unfortunately we never get to know who. Love the grape and vine - always looks good on a glass.
Again, height would be of interest - won't tell us the history - but can sometimes help.
This one looks possibly a tad more delicate - you might be correct with age, though equally it could be slightly earlier or later, but 'mid-ish' Victorian it undoubtedly is.
As usual, a good book on such things would have helped collectors.
Assume this glass doesn't give a lead-glass ring?