PA has always been one buck, in fact when I started hunting it was one deer per season so if you killed a buck, your antlerless license was void. Now we are still one buck but you can take multiple doe which makes sense because it is the number of doe that determines the next years deer population. It was the one deer per season that allowed our deer population to grow way too large and many places had obvious browse lines in the woods, although some people were not able to see them as they fought tooth and nail to stop multiple antlerless licenses. At one time PA had a million and a half resident deer hunters plus non residents so you can see why we had a one buck limit. I don't know if we will ever go to more than one buck per year, perhaps in the special regulations areas where there is essentially buy as many doe licenses as you want, if they do it should be earn a buck by killing a doe.