Was browsing ebay and found listed a standard face SS winchester M70 bolt body only for sale for $99.00. This is about as rare as they come. Not affiliated in any way.
Looks like someone messed with the bolt handle.
That thing has all kinds of issues. Grinder marks towards the front, and God knows what was done with the handle. Just cause the auction says "SS" doesn't mean much. Could be CM stripped to bare white steel. Heck of a lot of pitting/discoloration for stainless.
Why buy the bolt when you can buy the whole gun, have one for sale in 270 caliber.