I was on the hunt for an older Model 63 about 10 years ago. I never saw one for sale locally or at the guns shows I attended. I ended up buying a new, modern 3", 8-shot Model 63-5. It's a good revolver, no complaints except the lousy fibre-optic sight. But then I finally saw and handled and older 4" Model 63. It seemed lighter and thinner than my 63-5, it balanced well and looked stunning. I see why they are hard to find, nobody is willing to sell theirs. But it's worth the effort to find one.