M1 garand Question

[GGUTHRIE]

I have some m1 garand enblocs, on the bottom they are marked BRW-5
and the others are marked S I 1 can somebody tell me what these means? Thanks Glenn

 

[Mr. Finicky Timbers]

Those are just the codes for manufacturers of the clips. Both are post WWII. BR-W 5 was made by Borg Warner and IS1 was made by International Silver.

 

[Light Infantry]

The rare and pricey ones are the Winchester marked ones!

 

[.30/06 FTW]

Upon further inspection of my en-blocs, I saw that I had numerous Borg Warners, but they all had different numbers from 1-6. What exactly do these numbers mean?

Also, I saw some SA ones, which I am guessing are Springfield Armory.

Is there a list of manufacturer codes somewhere?