Help with Springfield Armory barrel markings

[Neal Myers]

I recently bought a new Springfield Armory barrel from CMP; they claimed the batch was made in the 1960's. But, the barrel markings on mine look more like WW2 production to me. They are on the bottom of the barrel, & read -D6586448 45 A160- M Below that the Ord Seal is stamped. Any thoughts?



EDIT: Ramboueille, you were exactly right; grease was so thick I missed the markings on the side (plus, I was looking on the wrong side. It's S-A-1-52. Thanks for the help.

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[Ramboueille]

Look on the side of the barrel. It's about 1-52.