Similar to Swinks, about 18 months. Played them as a kid from about 12 to my early 20's, then moved onto other things. Then, quite out of the blue, the interest blew in from nowhere early last year. I'm now 47.
I think I bought my first one when I was 16 or 17
Pete, do you even remotely remember what you paid for this first pin, and what was it?