The 260 came out after the 350! The 350 was very much on the market when I first got licensed in 1965. I think the 260 (which was called the "Cygnet," as in "baby Swan") came out in about '67 or '68. Not certain about the years, but as I recall (and I was a Swan dealer back then, in NJ) the 350 and 400 were definitely out first. They were all cute and pretty. I don't recall if my 240 worked CW or not, I was so excited to have an SSB transceiver and already had a lot of CW gear (Apache, NC-300, etc) that probably would have outperformed it on CW anyway. I was "home sick from school" one day as about a Sophomore in HS or so, and got on 20m SSB (new toy for me) midday, which I usually couldn't because I was in school, and heard AC5A in Bhutan calling CQ. I answered him and landed my first contact with Bhutan. I had no idea where that was, or if it was rare. We completed the contact and I ran to the Encyclopedia to find out where it was (no internet in '67) and was astonished. I later found out it was on the "top ten most wanted DX list." Who knew? In the middle of the day when everybody's at work or at school it's easy to work all kinds of stuff. I still have that card.