Compare to a known dated model, Blue Book of Gun Values.
Mossberg IIRC
If you are asking about air rifles it was made by Crosman Air guns.
No such model number in the Remington line
Both Daisy and Crosman made air guns/BB for Sears. I believe you are asking about the Crosman model 760 pump repeater Rifle. there are several variation's of the 760 starting in 1966 all the way to today. However Sears stopped selling gun in 1980 so yours is before 1980. I would think yours would be closer to the 1960 date because the later sears model 760 carried a model number of 126.19331.go to http://www.pyramydair.com/ and do a search for 760 to see if this rifle looks similar to your rifle.
Standard Catalog of Firearms or the Blue Book of Values might help
1,000 in mint condition. They are a rare rifle. Less than 5% of 760 BDL's were left handed.
300-500
$300
The Remington Model 760 was not chambered in .284 Winchester, so I am unsure what caliber you are referring to. sales@countrygunsmith.net
Dr. King was shot with a Remington Model 760 pump action rifle chambered in caliber .30-06. Ray originally purchased the same model in .243 winchester, but traded it for the more powerful .30-06, telling the salesman that he needed a "more powerful rifle."
This is a pump action centerfire rifle manufactured by Remington Arms in Ilion, NY. The serial number of the rifle indicates that it was produced July 1, 1980. The model 760 was produced from 1955 until 1981 when it was replaced by the model 7600 pump action rifle. Approximately 804,600 Model 760 rifle in various calibers were produced during that time. Fred Remington Arms Product Service Manager Ilion, NY 13357
It was offered in more than one caliber.