It's my birthday today...
So my gift to you is some new images of sets released in 1973! I won't tell you how old I am today but I was ten in 1973 ( :-) ) and set 358, Rocket base, pictured, was one of my favourite sets as a kid and it's possible I got it for my 10th birthday (but I can't remember for sure!)
1973 marked LEGO's entry to the US market. Previously sets has been made under license by Samsonite and the last few such sets were released at the start of 1973. Later in the year LEGO established themselves in the USA and began manufacturing and selling sets there. For some reason best known to LEGO, US sets were released with different numbers to those released elsewhere, possibly because of different packaging requirements. (US set boxes have more text including the set name and the number of parts on them. To this day these do not appear on the majority of boxes sold in Europe). Consequently, from a database point of view, things became compilcated!
Also of note this year was a large increase in homemaker sets, but still it would be a year before LEGO figures would appear to populate them. Floating boats were released, as were a range of supplementary parts packs.
All in all, a good year...