US O‑5 Rank Insignia Subdued Black on ODG – Folded Twill Single 3‑1/8" × 1‑3/4"

Vintage O‑5 rank insignia featuring a subdued embroidered black oak leaf on olive drab green (ODG) twill. Vanguard packaging identifies this as “Navy Collar Device – Subdued – Commander,” but the insignia is correct for U.S. Navy Commander (O‑5) as well as Lieutenant Colonel (O‑5) in the Army, Marine Corps, Air Force, and Space Force. Constructed in folded twill with reinforced two‑layer field‑uniform style. Single unit measuring 3‑1/8" × 1‑3/4". Sourced from an Army Navy Surplus Store and sold as a novelty collectible uniform item, not official issue.

FEATURES
- Rank: O‑5 (Commander / Lieutenant Colonel)
- Branch Use: Navy, Army, USMC, Air Force, Space Force
- Colorway: Black oak leaf on ODG twill
- Construction: Folded twill, two‑layer
- Size: 3‑1/8" × 1‑3/4"
- Manufacturer: Vanguard (subdued Commander packaging)
- Attachment: Sew‑on
- Classification: Novelty collectible; not official issue
- Source: Army Navy Surplus Store