Intel i486 SX33
A somewhat interesting 486SX33! Not because of its performance (which was just fine when this CPU first came to market) but because of its production date. This particular CPU has been manufactured in the 25th week of 2000. That's years after the initial release.
The earliest 486SX CPU's I have (at 20 and 25MHz) are dated 1991. I guess most SX33's were sold around 1993.
These later produced models weren't used in consumer PC's but in industrial applications.