MSS flew on Landsat 1/2 and Landsat 4/5 — but the bands got renumbered. Same wavelengths, new numbers:

• 🟩 Green (0.5–0.6 µm) — L1/2: B4 → L4/5: B1
• 🟥 Red (0.6–0.7 µm) — L1/2: B5 → L4/5: B2
• 🟪 NIR-1 (0.7–0.8 µm) — L1/2: B6 → L4/5: B3
• 🟪 NIR-2 (0.8–1.1 µm) — L1/2: B7 → L4/5: B4

⚠️ MSS has no blue band — visible spectrum starts at green. That’s why MSS imagery can’t be made into natural-color composites.