There is a fixed price (of $110 with the published coupon) or “best offer” item currently on eBay for a very clean-looking “Vintage Redfield Peep Sight”.  In the details the Seller writes he doesn’t know the application. Because it has a stem release button in the block, I believe it’s a Model 80 rather than a 70.  I don’t know whether it is one of the original steel models or one of the last versions that were aluminum. You’d have to inquire.  Of course you would also want to verify the stamp is a “C” code and not my overwrought imagination. 

My point is, if the Seller doesn’t know the application he also doesn’t know it’s for a rifle of the brand that usually results in an upcharge. In my experience, these same sights with an application code for a WWII Japanese Pacific Theater bring-back don’t draw top money. 

I downloaded one of the pix and enlarged the back of the block where the application code should be.  I can’t guarantee it but it looks like a “C” to me, which I believe is the Redfield code for Winchester Models 56, 57, 69, 72, and 75 Sporting. You would want to verify that in your Redfield literature too because it’s late and I’m about to turn in. 

So, for my WACA bros who live and breath Winchester rimfires – herewith:

eBay item number:387451625488.