If you are looking for a correct, as left the factory rifle, all the parts on a Winchester are specific to Winchester. There are dimensional, manufacturing and finish differences on virtually all Winchester made parts that aid in identification. There is no factory serial number on any Garand bolts. The drawing number (and heat/steel lot on SA bolts) is the number you see. It may have an electro-pen hand written number, but that is a European thing, not the way it left the factory. All Winchester bolts have the drawing number D28287-1 W.R.A. Just to add some fun into the parts sourcing, there were 2 variations of bolt made by Winchester. Depending on your serial number, it may have virtually all parts marked with a drawing number, or in latter production models, very few other than the reciever, barrel, bolt, oprod, hammer and trigger housing.
A parts rifle or mix-master that happens to have a Winchester Reciever is of no special value by itself. $1000-1200 if you are a cautious and patient buyer. If the rifle has been carefully restored with proper period parts (becoming increasingly hard to do, especially for Winchesters) it can command significant value in the $2000-3000 range. All originals with provenance can fetch near $5000 US.
If you need any assistance identifying components, IM me.
Hope that helps...