The other day, I bought an old Martin Warthog Magnum that I found on Craigslist.

I'm kind of curious about how old it is, and I was hoping someone on here could help. It looks absolutely nothing like this thing, it looks more like this, except it seems to be all wood. I think it's relatively old, judging from pictures of older Warthogs I found on the internet.

The riser has "2431" and "WHP 53247" written on it, and the limbs have "C something L 42987-4" on them.

I don't know if this will help at all, but the draw weight is 45 - 60.

By the way, I'd also like to know how to adjust the weight on it. I know zip about compound bows. I only really bought this thing because the seller tossed in a nondescript recurve and some arrows for free with it. Still, it's a pretty cool bow.