From around 1983. It was the last year Pioneer was on their own financially. The lime green p42,52,and 62 was a one year deal. Used up old stock and got ready for changes. I have two of these p42's, and won't get rid of either of them. Really good running saws for the size. As far as value I haven't been paying attention honestly.Thanks I thought they were yellow to. I thought it looked like a well made chainsaw at least it’s got AV. How do I tell what year it is. And what year did they change to yellow. And what’s the value of a running cutting P42 thanks for any help. I can’t get used to search function and the partner threads not so bad but to read 750 pages of this pioneer thread would take a while. Or even if somebody knows the pages where they were talked about Ghem thata b great. Thanks for your help.