WWII High Standard 1911A1 Magazines

I attended a gun show today and saw something that I'd never seen before.

Reputable dealer had a supply of brand new 1911A1 magazines manufactured by High Standard. The bottom of the floorplate was stamped with the High Standard eagle type emblem and the lettering "Colt .45".

Anyone else seen these before?

They are not WWII mfg mags. Most likely newly manufactured.

And not military at all, but commercial mags.