US Navy Medical Corps Subdued Collar Device Patch 3‑1/8" × 1‑3/4" Sew‑On

Subdued U.S. Navy Medical Corps collar device patch featuring the embroidered black oak leaf with brown acorn on an olive drab twill background. This 3‑1/8" × 1‑3/4" sew‑on insignia was worn on BDU and field uniforms as a low‑visibility alternative to metal collar devices.
Sourced from an Army Navy Surplus Store and sold as a novelty collectible uniform device, not official issue.

FEATURES
- Item Type: Subdued embroidered collar device
- Branch: U.S. Navy
- Corps: Medical Corps
- Insignia: Black oak leaf with brown acorn
- Colorway: Black/Brown on ODG twill
- Size: 3.125" × 1.75"
- Attachment: Sew‑on
- Era: BDU / field‑uniform subdued style
- Classification: Novelty collectible; not official issue
- Source: Army Navy Surplus Store