I've been thinking about asking about this for a long time. I actually no longer have the piece (though I have photos), but just now I saw what looks like the identical thing on ebay:
http://cgi.ebay.com/HandBlown-1950s-Vintage-Flower-Vase-Green-Clear-Glass_W0QQitemZ400003568809QQcmdZViewItem?hash=item400003568809&_trksid=p3286.c0.m14&_trkparms=66%3A2%7C65%3A1%7C39%3A1%7C240%3A1318When I listed it someone wrote me and said it was a "bridal bank" or "bridal purse." I have seen a somewhat similar but much more ornate piece in a book or museum photo that was described as a bank.
The peculiar thing about this was the way it looked like it had been made. To me it seemed like the bottom part was a piece made at a different time, and added to later. The colorless on the top and bottom seemed different - you can see it in the photo looking straight down, the bottom is slightly greenish grey. The top rim of the bottom part looked like it had been chipped away to form the edge, and the ropes added around it. It wasn't jagged or sharp, just not really even.
One thing I didn't have was a photo of the bottom, and it's good to see it again. To me it looks like a cut-shut bottom on a pressed piece. That would mean that originally it had a narrower neck.
Has anyone seen this kind of thing? It seems an odd way to make something, but I was thinking if it was indeed some sort of bridal tradition somewhere to have a glass bank, maybe its construction was part of the tradition. It's probably just a flower arranger though.
Here's one of my few photos: