Fully restored, bolt-modded IBM Model M "Square Badge" dated Feb 10, 1987—includes SDL-to-PS/2 cable, PS/2-to-USB adapter, and the rare "rainbow plate" logo, tested plug-and-play ready.The vintage IBM Model M keyboard, dated Feb 10, 1987, is a mechanical keyboard with a QWERTY layout and a classic off-white design. This unit is professionally restored, bolt-modded, and ready for a new home. It features enhanced function keys and includes the highly collectible, rare "rainbow plate" square badge. Delivering the authentic buckling-spring experience with crisp tactility and the signature Model M sound profile, it comes with a USB adapter for modern convenience. Made in the United States, this classic keyboard is a nostalgic piece of computing history that offers an unmatched typing experience.INCLUDED

• Original SDL‑to‑PS/2 cable
• USB adapter (for systems without PS/2)
• Rare "rainbow plate" square badge installed
• Fully tested plug‑and‑play setup for modern and vintage PCs

WHY THIS KEYBOARD IS SPECIAL

• 1987 Square Badge: Highly sought-after early production era with premium build quality.
• Rare Rainbow Plate: Features the collectible silver-on-grey logo badge.
• Professionally Restored: Fully disassembled, deep-cleaned, with fatigued springs replaced.
• Bolt-Modded: Upgraded with 2mm hardware for permanent structural durability and serviceability.
• Modern Verified: Tested on modern Intel Z690 and Z790 platforms so it works right out of the box.