November 15th, 2012, 09:46 PM
Join Date: Jan 2006
Here are some pictures of a 1959 m marked SA elevation knob note the size of the washer around the screw. You can see the m to the right of the 10 in the picture. Sorry it's blurry.
As far I know the only SA marked windage knobs are new made by SAI. USGI SA would be BME marked.
Well, I forgot about a USGI SA marked NM windage knob
Last edited by tnw50cal; November 26th, 2012 at 07:50 PM.
Reason: SA NM knob