The Marlin 989M2 .22 caliber semiautomatic rifle was made from 1965-78. It was originally sold with a seven round box magazine (what some people call a clip) but the modern (written in 2012) Marlin brand 10 round or 7 round nickel magazines work fine in the 989M2. As extra information be aware that a "twin" of the 989M2 was made with a tubular magazine, holding nine rounds, and that twin is the 99M1 made from 1964-78. These two Marlin rifles are nicely made models with walnut stocks and handguards. They were made to look like the M-1 Carbine military rifle.
Try e-gunparts.com
Your Marlin model 989 which was a semi auto promotional model will range in price from 75-150 dollar,depending on overall condition.
Try a thorough cleaning, change magazines, change ammunition. The marlin 989 was made in the 60's the bolt does not open when the last shot is fired
50-125 USD
try Numrich Gun Parts Corp.If they do not have one,maybe Marlin itself may have a few still in stock.E-bay would be another good place to find a stock for your rifle.
try eBay that might do .
Contact Marlin customer service through their website, and request an owner's manual for your rifle. They are free.
On the main Marlin Firearms website, there is a section labeled "Owners Manuals", from which you can download the manuals of Marlin products in .pdf form. Assembly and disassembly instructions should be included in these manuals. See related link.
I have used the 10-round magazine for the Marlin 795 sold by Brownells (www.brownells.com) as 550-000-337. This is a nickel plated mag. Aside from extra capacity and nickel plating it appears to be the same design as the 7-round magazine that came with the rifle (Marlin 989). Brownells also sells a 7-round blued mag as 550-707-346 that should work.
I'm not sure what they are worth now, but I bought one a few years back for around a hundred bucks..
Could you be asking about the model 989m2?If so these were made in 1966 and are going for between 75-150 dollars.This was a promotional model semi-auto .22cal rifle.
your marlin model 1897 was made by marlin in 1903.