You could try the marketplace here. I've also heard good things about Etsy (but have never used it).
On eBay it tends to help to have a low starting price to attract early bids, though this is always a risk. You also have to be realistic with your expectations: you are unlikely to get a price in the retail range for comparatively lesser known makers such as Jobling and Barolac for example. In contrast, Lalique does very well on ebay, due to the strong brand recognition.
Having previously specialised in Jobling and Barolac and selling a lot through ebay, I think a key aspect is good photography. A nice bright exposure against a plain white background can work wonders to attract bidders. You may also want to include something for scale in one picture as the Bird and Corn vase is an impressive piece with real presence: it can sometimes be hard to communicate this in a photo.