In response to your question of how many produced: not many produced at all! Short production run . Just a few years. Three stock styles , actually more if you add in options. The Sporter and International were offered with factory checkering(rare) as well as the carbine style. Beautiful designs; nearly perfect from the introduction with a few changes during production. In the 44 mag, maybe a few thousand at best. Serial numbers don't help as stock styles were mixed in and produced at random throughout production. There will be others that can add to my comments.
Love the designs and would not sale or trade for any reason that would come to mind. The prices on the mag, in my area, just keep climbing for Sporter and International stocked. You seldom see a Sporter or International for sale. Last International sold that I was aware of was $1500 +, plain stock.
Painful are the ones that got away.