When were rectangular colour TV sets first on the market?

[Aussie Bloke]

Hi all. I have a question. When were rectangular colour TV sets first put on the market?????

I know experimental rectangular colour TVs were made in the 50s, but the majority of the rectangular sets I've seen in old ads on Ebay and National Geographic mags don't date any earlier than 1965 though I've seen a couple from the early 60s that's if the dates are correct.

Also wondering was the reason why colour sets were round til the mid 60s was because the dynamic convergence had to be developed/corrected? I've learnt in my TV course that there is static convergence and dynamic convergence which static is takes up most of the area of the TV in a circular form and the dynamic is around near the corners of the screen.

Cheers
Troy