Well, there are different types of value.
Insurance value is the highest dollar figure. This is how much you tell your insurance guy it is worth and that is the amount it should be insured for.
Next highest would be retail value, this would be how much it would sell for in a retail store. This can vary greatly in different geographic regions. For example an upscale gallery in San Francisco would have a much higher price than a little antique store in Fresno.
Auction value is the amount it would typically be expected to sell for in an auction.
Then there is what I like to call "Craigslist value" or "Ebay value" which is the amount one person can realistically hope to get when they sell it to another person.
The value can be even less if it is sold to a person who is reselling it, because they have to be able to turn a profit. Watch some of the pawn shop reality TV shows to see how that works. Estate buyers do the same thing, usually buying several or many items for a lump sum.
So to research what the value might be, you look for similar items, in each of the above situations.
Here's one similar to yours but not exactly like it selling for $695 (retail)
http://www.materialsunlimited.com/index.php?option=com_content&style=0&search_terms=&task=view&id=17&sview=store&category=0&page=59and there are a bunch on Ebay, but the prices are all over the place, so further research would need to be done to deterine what the differences are and where yours fits into the scheme of things.
