Try the Blue Book of Gun Values
This site has the information you are looking for about Nikko shotguns: http://www.shotgunworld.com/bbs/viewtopic.php?p=9341
what are you looking for? i have forearm and stock or i am looking for a set of barrels for nikko 5000
On the internet.
Used to be made inJapan, no longer made. Last ones in the 80's or so were sold in the UK.
You can find information about Russell Arms Co. shotguns online at places like Gun Trader or at many local gun stores. You can also find information online at Shotgun World or Arms List.
Value of any gun is based on exact make, model, and condition. For a collectable firearm, a #1 serial number would increase that value, but Nikko is not especially collectable. You also gave us no information on the model (There were several rifles AND shotguns that used the Golden Eagle designation).
If data has been published, you might be able to find out the date made and specific model.
Nikko was the leader of the flyilng monkeys.
Nikko .410 model 741 Over & Under You need to find a Nikko .410 for sale in the first instance - the company made plenty of guns in most gauges, but they did not make many .410 Over & Unders. the Nikko gunmaking company made guns for Winchester, and if you look at the Nikko model 741 and the Winchester field model they are almost identical - both Nikko and Winchester .410 over & Under shotguns are scarce the world over, these guns in turn demand big money - there has been only one Nikko .410 for sale in the UK in the past ten years on the Internet, and this gun sold with in five days with an asking price in four figures and on all accounts not the best example - value for anything is linked by a number of factors - 1. Quality, 2. Quantity (Rarity, 3. Demand. In the event you find a Nikko .410 Over & Under the gun could be a real investment, but how much should you pay, the gun has already more than trebled in value on its original retail price since 1980 - the "Sporting / Game models are the most rare of these models and the best investment if you are luck enough to find one - good hunting.