X86-Secret : ES Zone
Nx587 ES  (Week 32, Year 1995)   
Nx586 N/P - P220000D P320000TM

NexGen used to produce some microprocessors in mid-90'. The only mass-produced CPUs from nexgen wrtr the ones from the Nx586 product line. Lot of these CPUs did not include a FPU co-processor and no stand-alone FPU chip was released to the market. However, they existed ! This rare sample is one of them.