Post-War BAYKO Set Structure

There were significant differences between the BAYKO set structure of the pre-war and post-war periods, that's fairly widely known, but have you ever asked yourself why?
Early post-war literature actually suggested a post-war range of sets #0 to #5, one more than eventually materialised...
A slightly earlier piece of Canadian literature actually goes as far as to promise a post-war set #6 - if only...
Have you ever stopped to consider why this happened...
...well, this page attempts an explanation.
This new set is perhaps the easiest to explain. Set #0 provided a cheap, entry level set, based on the newly introduced Flat Roofs & Roof Ends, to target the stocking filler market and reintroduce kids to BAYKO, at a bargain price, in a period of austerity.
There is no magic or deep thought required here, the post-war set #1 is virtually identical to its pre-war counterpart.
Introduced a little later, but using the same logic, again the post-war set #2 is clearly based on the contents of its pre-war equivalent.
This is where the first 'controversy' arises.
The pre-war sets #3 and #4 both had the same range of roofs [1 x Small, 1 x Medium and 1 Large] dropping the pre-war set #3 meant that the first 4 post-war sets would be based on progressively increasing roof sizes.
Post-war set #3 was therefore based on pre-war set #4.
Although there are slightly more differences than with the smaller sets, the size of post-war set #4 is still very similar in size to the pre-war set #5.
The nonexistent post-war set #5 would, logically, therefore have have probably been based initially on the pre-war set #5...
...however, after the set #6 was dropped [below], it would probably have been based on the pre-war set #6 and thus have been the flagship BAYKO set, in the same way that the "De-Luxe" set #6 was pre-war, but...
...the key issue here would have been price... the time that the set #4 was launched, in 1952, it would be realistic to estimate that the price of a set #6 would, almost certainly, have been around £8 - more than the average weekly wage at the time!
I'm not absolutely sure where the equally nonexistent post-war set #6 would have fit into the above logic, though presumably it would have been based on the pre-war set #6. However, the idea was dropped in 1946 or early 1947.
When Plimpton made their final marketing decision not to launch set #5, [late 1951 or early 1952?] they made another...
...recognising that set #4 had become, de facto, the flagship BAYKO set...
...that they should introduce the Dome, Pinnacle Roof and Pinnacle Platform to further enhance the set #4 contents...
...and the post-war range of sets was complete...
...and yet - they could have made room for the Turrets!
SET #  
Well, what do you think? Why not email me and let me know how you think it all happened?
After a bit of thought, I think the set #5 / set #6 chaos may have been another victim of C.B. Plimpton's sadly early demise.
Thanks to Bob Burgess for his contribution to the discussions behind this.
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