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Just glancing over Truimphs on ebay and saw a 1962 TR3 and a 1961 TR4. Is this just a "year of sale" thing or did Triumph actually build TR4's while TR3's were still in production?
[/ QUOTE ]As others have noted, there was overlap due to the TR3B production. Of course, some of them ended up being registered first as 1963 models due to the date when they were sold. Meanwhile, I suppose it's possible a few very early TR4s were registered as 1961 models, but I doubt it. The car was introduced late in that year, and I can't really imagine any dealer proclaiming "step right up and buy...uh...what's now a brand-new, never-before-seen...last year's model!"
Meanwhile, the '62 TR3 on eBay might even be a 1960-built car. From about mid-1960 and on for a year or so, Triumph had some tough times with sales, not to mention the Leyland takeover, etc., etc.