Check the listing for details. Vintage IBM System/360 (S/360) Reference Data - Multi-fold Brochure GX20-1703-9. Made in United States. Listed at 16.50 USD. The Vintage IBM System/360 Reference Data Multi-fold Brochure (GX20-1703-9) is a nostalgic piece of computing history produced by IBM. This brochure provides detailed information about the IBM System/360 (S/360) model, showcasing its machine instructions, machine formats, floating point feature instructions, extended mnemonic instruction codes, CNOP alignment, summary of constants, assembler instructions and many more details. With a vintage flair, this brochure offers a glimpse into the past and serves as a valuable collector's item for enthusiasts of vintage computing. Made in the United States and weighing 0.7 ounces, this original 14-page brochure (7 front and 7 back) provides a unique window into the computing technology of IBM in the 1960s.