It was simply called the ".357 Magnum." More commonly known as the "Post-War Pre-Model 27." Your gun is a very early four-screw, made in 1956. sales@countrygunsmith.net
The serial number. If the serial is less than 2,700,000, it is a pre-1964 gun.
The Winchester model 69A is a pre-serial number firearm and as such does not have one.
The last pre-1964 Model 94 serial number was 2,586,000. The newer rifles with stamped parts started with serial number 2,700,000.
That all depends on the model of Winchester you are asking about?If you can supply a detailed description of the the model and the serial number then your question can be answered.
Generally it is the prefix letter of the serial number for example N102770 would be an N frame. It can also be ascertained by the model number. 25,27,28,29,57,58, 520 629 are N frames. 14,15,16,17,18,19,48,53,66,67,68 and their pre model versions are K frames.
It is pre 1964 with a serial # of 496507
Serial number.
No way to know the caliber from just the serial number
By the serial no, go to a Winchester serial no chart which can be found on the web.
your model 1894 Winchester was made in 1951,which would make it not a pre war model,if you are talking about WWII.
Anywhere from $250- $500, depending on condition, barrel length, and documentation (EARLY pre-war "registered" magnums with factory documentation can be worth much more. )