@FRENCHTRAINS I forgot to mention that BLZ locomotive does look remarkably like the GG1, especially one of the early ones that was called "old rivets" which was made before the streamlined shell was welded and in fact on this one engine it was riveted. It would be interesting to know what prototype BLZ was modeling on the engines in your collection. I .don't recall any French prototype that resembled a GG1.
Best Wishes
Don