If you are asking about the Remington Air Master 77. Then see the attached Web Page. It was made by Crosman Air gun. New in 2006 See the Link Below
Your Winchester model 77 rifle was made from 1955-1963.
Pretty good
20-150 usd
I'm not familiar with a "Winchester model 77". Is this a bolt action gun or a lever-action rifle? Winchester's famous bolt-action hunting rifle is called the Model 70. Their most famous lever-action guns are the 1873 and 1894 models. Ruger is a company that has a bolt-action rifle called the Model 77.
100-500 or so
The Webley $ Scott Hawk MK2 was made between 1974-77 it had an optional .22 barrel. Please state the condition of the rifle to get an estimate of value. Is it still working? Is it in Poor, Fair, Good, Very good, or Excellent condition?
100-1000 USD or so depending on specifics
Your winchester model 77 rifle is valued at between 75-175 dollars depending on overall condition.
Not enough sales
Well I am not sure about all the models but my Remington Airmaster 77 says it was manufactured by Crosman. ( Crosman is in New York) It doesn't say anything about China anywhere on the box or the rifle. Crosman owns Benjamin, Sheridan and is licensed to manufacture Remington air rifles.
Have you tried a google search?