[Steve in PA]

A number of years ago, I had the opportunity to buy a S&W 22 auto while sitting at a bar in Armstrong County. It was new in the box and I was told it was never fired. I spent $50.00 for the pistol and put it away. Well, while looking for XMas decorations, my wife found it in our walk in closet, and I had forgot all about it. How can I register this pistol without a receipt or any other documentation?

You bought the gun illegally. It should have been transfered through a FFL. Now, without the other person being in the picture, you can't legally transfer the firearm.