9 genuine vintage Signetics wide-body integrated circuits. This lot features a beautifully preserved, sequentially numbered firmware/logic block (including numbers 0, 2, 3, 4, 5, 6, 8, and B.) This unified engineering layout is an exceptional find for arcade PCB designers, legacy microprocessor developers, and retro-computing historians who need authentic, synchronized late-70s and early-80s Signetics silicon. The Sequential Layer (5x): High-reliability Signetics wide-body 28-pin chips with serial indexes C55032, C55033, C55034, C55035, and C55036. Features matching 1980 factory production stamps (8013E / 8016E). The Controller Section (4x):** Includes matching wide-body Signetics processing blocks cataloged under CN7345N, CN7341M, and CN7337M. Boasts exceptional, early historical date codes including 7919 (May 1979) and 8003 (March 1980) running the processing code of early arcade cabinets. Sold strictly AS-IS due to the delicate vintage nature of legacy components. Fast, next-business-day shipping with tracking upload.