You didn't say, but the snail is probably clear glass? and is made from a single mass of glass formed into a large snail. These snails were made sometime in the late 1970s or later. I haven't seen one with a number before. I've never owned one of these. I've only seen them in pictures. I located a couple online by googling Barbini snail. The two line signature is of the type used in the 1970s. I'm not sure when Barbini stopped using this signature. The plastic label is of the type used 1970s and later. From the appearance of the snail, I would guess it is late 70s-early 80s.