Well, I imagine Indians and wheaties count too so....about 21 years now I imagine. Bought my first coin when I was 8 early in 1990, I used to save up all the pennies around the house and my mother would drive me to the local coin store and let me buy coins to fill out my sets. Boy was I happy the first time I could afford to buy a roll of wheaties for 5.00
If your asking about bulk copper pennies which I can only imagine is the case, about 4 maybe 5 years can't remember. I remember thinking I stumbled upon some grand scheme that no one else had even noticed, boy was I suprised to find Realcent
"Against logic there is no armor like ignorance. "
Laurence J. Peter