I too, had one of those, back in the day. My first gun, a 20 ga "youth" Model, it had a 26" Modified choke barrel, and a recoil pad. The stock was not checkered.
I got for Christmas about 1966 or so, NIB. It came from Sears/Roebuck, and "Santa" hid it under my parents bed for about a month, before Christmas. I forget excactly how I discovered this fact,
but I did. At every opportunity, I'd sneak in and pull that long brown box out, and open it, and just stare at it. I didn't dare take it out of the box. I was pretty sure it was for me. I didn't see any of my four sisters getting one.
Christmas morning, I was the second into the living room. My parents made us go in order, my older sister got to go first. She took her jolly good time checking out her haul. Then I got to go.
No, it wasn't hidden, it was there across the arms of a chair. There were two boxes of Sears 20 ga shells there with it. Some socks and stuff, but who cared about that? After a quick "this is how you load and shoot it lecture, and an admonition to "don't shoot yourself, or anyone else" I was out the back door. Slipping one of those yellow shells into the chamber, I raised the gun to my shoulder, and pulled back the hammer in one motion. The bead sight settled on an old can at the edge of the woods. (Yea, we could just shoot in the back yard "in the day.")
BOOOMMM!! The can jumped. I was still standing. It hadn't knocked me down.
I dropped the lever, and broke the gun. I pulled the empty shell out and breathed in that wonderful aroma of just fired shotgun shell.
I was hooked for life.
(My son still has the gun. He will pass it to his new son one of these days, I'm sure.)