I have seen many, many classic telescopes in catalogs dating back in the 50's and 60's. The first classic telescope I ever owned, I ordered from a local Sears catalog store.
But I did not know it would be a classic. But the first one I ever saw in person ( to the best of my knowledge ) was an orange tube Celestron refractor. Do not remember what year it was, but it was before I bought my Sears. It was in some store in a mall in the mountains, our parents went up there to visit some relatives, and they took us to a place where there were a lot of stores. When I saw the scope, I did not think anything about the thing being a classic one day, probably did not even know what a classic was at that age. But I remember seeing it sitting up on a table behind the clerks counter.