The Marlin Mod 25 production started around 1966 and is still sold as the 925. For the exact year of production of your firearm you will have to locate dedicated Marlin collectors. Manuals are available by download from Marlin's website: http://www.marlinfirearms.com/customersupport/manuals.aspx If you want an original, try eBay.
Glenfield,which was made by Marlin Firearms Company made a bolt action .410ga shotgun from 1956-1965.This was the marlin model 59 which is the same shotgun as your Glenfield model 60.
Contact the company Marlinfirearms.com for a free manual . It can be downloaded
Same as a 336 Marlin. Call Marlin at (203) 239-5621 and they will send you a free manual.
Your serial number indicates that your Glenfield model 20 bolt action was made in the year 1980.
Try the Marlin web site or eBay. Try the Marlin web site or eBay.
your marlin/glenfield was made in 1974.
About $150.00
Marlin Glenfield. http://www.marlinfirearms.com/About/History.aspx Marlin Glenfield http://www.marlinfirearms.com/About/History.aspx
Visit the Marlin website. They may have the owner's manual available for download. If not, they will supply you a paper copy, typically free of charge.
Not particularly.
write to marlin with any and all writngs/markings on reciever/barrel and serial numbers
Go to http://www.marlinfirearms.com/ and request an owners manual for the marlin glenfield model 60. They have changed little since 1980.