Mexican Army Subteniente Rank Insignia – Screw-Post Fastener
 
Rank Overview:
The Subteniente (Sub-Lieutenant) is the most junior commissioned officer rank in the Mexican Army, equivalent to a Second Lieutenant in other militaries. The insignia typically features:
 
Material: Brass
Fastener: Screw-post backing for secure attachment to uniforms, common in mid-20th century insignia.
 
 
Role: Subtenientes lead platoons or assist senior officers, often fresh from the Heroico Colegio Militar (Military College) 1.
 
Collector Notes
 
Authenticity: Vintage screw-post insignia are prized for historical accuracy 2.
 
Rarity: 1930-50 examples are uncommon.