I do not know anything about pre-WW II Winchesters but I collect recently made traditional folders. Neither Winchester nor Remington have made a knife since they stopped manufacturing them to focus on more important war material for WW II. For 75 years both brand names have been on knives made by multiple US manufactures and relatively recently on Chinese knives. Also, for a long time US pocket knife manufactures have been buying knives out of each other's production runs. Sometimes that is done to get smaller batches than they usually make or different handle shapes. Identifying who actually made some knives can be confusing.
Your knife is a Large Coke Bottle with what Case calls a CopperHead hump on the front bolsters. The shape and short length of its bolsters, narrow Coke Bottle neck, pin locations and blade shape appear very similar to Queen's knives. Also, it has pits left from rust that was cleaned off and Queen makes a lot of 1095 carbon steel blades. Queen is well known for making small batches of relatively expensive traditional knives for other companies. That's an observation, not an identification of your knife. Lay it flat on a ruler, press the ends of both against a vertical surface then look straight down from above for an accurate measurement of the handle's length. Queen's are 5 1/4".
Remember, I do not know how to recognize the knives Winchester made themselves and overseas manufacturers attempt to copy most of our traditional designs.