I haven't read it, but I'm sure I've seen pics of unlined upper fenders, which I can't put my finger on now. (And besides which, Hornby seems to have also seen such an absence judging by their early EP.) Quite possibly I've put the emphasis the wrong way round, i.e. despite upper lining being dispensed with on all continuous fenders (e.g. the 4000g), the upper fender lining was still the norm on the Churchward 3500g rather than the exception. Tender swapping between express passenger and non-express passenger locos is also a factor in my opinion, as is the far longer repaint timescale for tenders. But I'm grateful for your observations and those of others in the last few days on the matter, and it is only by these debates that we can fill in some knowledge gaps. The problem area is that Churchward 3500g tenders were no longer being fitted to express passenger engines post 1932-ish (for Halls), the Counties had disappeared by then, so we are left with the 1932 to 1938 window in respect of the Saints and Stars. I have no issue with the post-1945 situation, but the only clear visible examples that have come to light are the 'full-monty' special behind the oil-burning 5091 and the individualistic practices of Caerphilly.