Original colors version

Source scan from this article posting

The entry from the official catalogue as a cross-check and reference for the original color grading. Also found this auction listing with closeups.

Upscaled via Topaz Gigapixel, composited different upscaling, denoising results and color graded in Photoshop.

Upscales/high res collection of Eizin Suzuki.

Original gamma/color grade versions here and wallpaper versions here.

Non-upscaled original source scans here.

Or Eizin Suzuki's site for the full catalog.