What you have is a 1943-P with a spur like die break extending from the end of the 3. This variety is commonly confused for the overdate but upon closer inspection, you will notice that the angle is incorrect as the real overdate is at a 45 degree angle. Furthermore, with the level of wear on your coin, you should certainly be able to see evidence of the flat base of the two within the bottom loop of the 3. Your coin does not show this. Here is a photo of some actual overdates for comparison. BTW, your photos are outstanding and it is still a nice find. I have never seen one of the spur like varieties. Your coin is well documented and commonly mistaken for the overdate according to Bernard Nagengast (THE JEFFERSON NICKEL ANALYST) who states that your variety "was first reported in Spadone's Variety and Oddity Guide in 1964." Paul
when it comes to Jefferson Nickels, I think that Paul (Lehigh96) is one of the more respected experts here. Without question an opinion I would want if I were in doubt about any Jefferson Nickel.