Mine was my father's Winchester 56 .22 short, which he was given as a boy in 1930, when he was 13 years old, and which he gave to me in 1960, when I was 13. Glad to say I have it today. I've dispatched many a woodchuck with it.
The 56 turns out to be a very rare and valuable rifle (little did I know all these years). Only 1,171 56 shorts were produced. Mine has the very rare stainless steel barrel, which makes nearly unique. The Win aficionados over at Rimfire Central have never seen one in stainless.
See the attached discussion (with pix), if you're interested.