Are there any marking or name on the base? Make a note and pop into your lolal library and ask for a copy of Millar's collectables guide. If this brings up any sort of match it might be worth taking it along to your local auction house for an opinion, though thay do vary in how good they are
Hi there, I have used thes people in the past, they provide free, online valuations. log into the website and there is a contact email address. http://www.luckners.com/
Simon Luckner is very very helpful.