Things You'll Need
Instructions
Check the toy for brand name tags or imprinted markings.
Using identifying information, search bidding sites like eBay for the item, looking closely at "completed listings" to determine the prices similar products sold for. If you don't have the toy name or brand to go by, search by a general toy category such as "vintage dolls" or "tin toys"--you may be able to match the toy in question to a photo online. Sites like thisoldtoy.com categorize toys based on the decades in which they were made.
Search online for toy collecting sites like toykwest.com. You may also find a site dedicated to the specific brand or type of toy you are valuing.
Contact people on these sites who write about and buy and sell old toys. You can learn a lot from their experiences valuing vintage toys.