US O‑5 Rank Slip‑On Insignia Subdued Black on ODG – Folded Twill 2" × 1‑1/2"

Vintage O‑5 rank slip‑on insignia featuring a subdued embroidered black oak leaf on olive drab green (ODG) twill. Vanguard packaging identifies this style 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 and sewn into a slip‑on loop for wear on epaulets and shoulder straps. Measures 2" × 1‑1/2". 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
- Style: Slip‑on epaulet insignia
- Colorway: Black oak leaf on ODG twill
- Construction: Folded twill, sewn into loop
- Size: 2" × 1‑1/2"
- Manufacturer: Vanguard
- Attachment: Slip‑on (not sew‑on)
- Classification: Novelty collectible; not official issue
- Source: Army Navy Surplus Store