Scope Base Mount for Win Model 70 - Fit Old or New?

[pertnear]

I have a Burris one piece bridge base mount for dovetail rings that supposedly fits a Win model 70. I've been looking around & apparently there is a different screw spacing between old & new Mod 70's(?) How do I tell what I have? No numbers or codes that I can find on the base. TIA for your help!

301746

[Electrod47]

Do you have the gun available to overlay it?

[pertnear]

Do you have the gun available to overlay it?

No, that's the problem. I want to sell or give it to someone but don't know exactly what I have.

[John Taylor]

If it's a pre war it take a special mount, no holes in the top of the rear bridge. And if it is please don't drill holes.