Vintage US Navy LCDR O‑4 Subdued OD Cap Device Patch 1‑3/4" × 1‑1/2" TE Sew‑On

Vintage U.S. Navy Lieutenant Commander (LCDR, O‑4) subdued embroidered cap device featuring the black oak leaf insignia on an olive‑drab background. Manufactured by Vanguard, this is the cloth, fully subdued version used on Navy working and utility caps. Patch includes a turned‑edge (TE) border, measures 1‑3/4" × 1‑1/2", and is a sew‑on insignia.
Sourced from an Army Navy Surplus Store and sold as a novelty collectible uniform item, not official issue.

FEATURES
- Item Type: Subdued embroidered cap device
- Branch: U.S. Navy
- Rank: Lieutenant Commander (LCDR, O‑4)
- Insignia: Black oak leaf
- Manufacturer: Vanguard
- Colorway: Olive drab with black embroidery
- Size: 1.75 × 1.5 in
- Edge Type: Turned‑edge (TE)
- Attachment: Sew‑on
- Classification: Novelty collectible; not official issue
- Source: Army Navy Surplus Store