Up for sale is a genuine, vintage Mostek MK50242N Top Octave Synthesizer IC chip (12-note TOS).
This chip has been carefully pulled from a working socket, fully tested and is in 100% working condition. It is a crucial and rare replacement part for many legendary 1970s and 1980s synthesizers, string machines, and electronic organs (such as various Farfisa, Crumar, Elka, Solton and many others).
This chip is a 100% direct equivalent to the M086B1.

Details & Shipping:
• Condition: Used (socket pulled), tested and fully functional.
• Protection: Shipped in high-quality anti-static foam and an ESD-safe bag to prevent physical or static damage during transit.
• Shipping: Dispatched via tracked courier with fast handling.

Important Note: Due to the vintage nature of this electronic component and the risks of improper user installation (static shock, incorrect orientation), this item is sold as-is with no returns. Please ensure you are comfortable with vintage IC installation or consult a tech before purchasing.

If you have any questions or need specific details, please feel free to ask. Thanks for looking!