How old is your cartridge?


We read and hear about cartridges that are ancient that people are still using, and we read about others replacing their cartridge after a few years because the cartridge is spent. 
How old is your cartridge that you use regularly? 
I know one person still spinning a Shure V15 Type II Improved with a stylus that is probably about 30 years old. The cartridge itself was purchased by the guy new in the early 70’s. 
My cartridge, a Linn Arkiv B, is 18 or 19 years old and it’s definitely tired by now. 
Thanks all for responding! 
128x128zavato
“Age is inconsequential.

Hours matter”

I disagree- 

the rubber in the suspension will deteriorate with age. That can affect trackability and could lead to mistracking 
Suspension may deteriorate faster, before stylus wears out completely- by that time i am sure though that the shape would be rounded -, when mistracking appears you know it.
G
Got a Stanton 681EEE from 1976. Old enough to tell me the suspension getting hard argument is another one that sounds good but falls apart in the real world. Meanwhile the one I use every day is a Koetsu Black Goldline now going on 3 years. It will like the vast majority of cartridges be replaced with a better one long before it needs to by wear alone.