ID blue trailed and feathered footed vase with blown stem

[aa]

http://glassgallery.yobunny.org.uk/displayimage.php?pos=-3557

This is one of a broken pair of supposedly Murano vases or goblets. 25cm high by 15cm.

I've seen these before, but can't remember when. As usual, before I try to make a replacement for the owner, I wonder if anyone knows whether these are current production anywhere, as it will obviously be much less expensive for the owner to buy one off the shelf.

Thanks
 :D

[Anne]

Adam, it's probably not connected, but I've just spotted a piece with similar colouring and patterning on Great Glass here: http://www.great-glass.co.uk/library/lib2ae.htm (item number 6021 - described as a signed Gray-Stan vase, probably by James Manning c 1930).