Buck 110 is true legend of knife world - like Kalashnikov, optimal construction in any means. Most produced (over 3 000 000 from year it was introduced 1964) and most copied. Initially it has 440C steel blade and for 1964 it was like ZDP-189 now. Now it is 420HC and it is still most popular among working people.
Well, several generation grown up with this knife.
It is perfectly shaped, perfectly balanced, perfectly grind... Edge retention even for regular 420HC is very good - ahead of quit