This is an example of a London Pub "pumpkin flask" branded with the name of The Fishmongers Arms, Wood Green these were very common in late Victorian period for pubs selling beer and spirits to be taken away and consumed at home. Read the details here: http://www.bowesandbounds.org/forum/topics/historic-bottle-from-the-fishmongers-arms

I am grateful to "Flaskboy" for permission to reproduce the photograph here. More great images on the "London History in a Bottle" collection:
http://www.flickr.com/photos/71171743@N05/collections/72157629141517824/