Small bowl Diameter 12,5 = 5", height 8,5 cm = 3.1/2". It is very light aqua glass, partially powdered in blue but so light you can hardly see, and it has bird silhouettes in brown. The bottom is smooth but not polished - so a little greyish. That may be the reason that I missed the fact the piece is signed - though it needs a favourable light and strong magnification to see it...
As far as I can make out it says
(C) JL BALLARD
Doth it ring a belle, anyone?