There was in another post in this same Esterbrook forum an unexpected interest in Esterbrook pens made in Mexico ("HECHO EN MEXICO"), and I promised to look for some of them… Now, until now I could find two in a repair shop in downtown Mexico City, and I am advertising them in the Clasifieds section under the title
"Two Esterbrook Lj “Hecho En Mexico” - Without A Nib"
I attach here the photos, so you can see right away if the thing is interesting for you.
PEN 1 (Coppery):
Pen 2 (Reddish-brown):