mct16:
I don't think these are trials, they look like actual book covers. Notice the spine in the middle of the Crab cover and the listing of the previous books by Herge attached to it. This is the way that the books were published in the 1930s and 40s.
Hmm. Even though someone's added a cloth binding and back-board, I disagree that the
Crab one was ever an actual book cover. The title lettering's far too roughly drawn (and hard to read against the background) for this to look like something Hergé would have actually had published.
Some of the colouring's rough too, particularly the scribbled pencilled shadows on the cobbled streets. And the cobbles have been pencilled, rather than penned, a style Hergé never used for finished
Tintin artwork.
Also, the white strip carrying
Les aventures de Tintin, and the white box carrying
Hergé, are squint and the white areas roughly painted in.
If this
is a trial rough by Hergé, then I'd guess that the cloth spine and back were torn off an existing book and glued on to the rough piece to enable him and his publisher to see how it would look in context of the actual book.
However, I suspect that this may simply be a much more recent fake, made by hand-colouring a traced or black-and-white version of that full page plate from the book, and roughly tracing the title lettering from the book's cover.
I think I'm right in saying that the style of carrying
Les aventures de Tintin in a horizontal strip like this wasn't used until the later Tintin books of the late 1950s onwards. Of course, Hergé
might have been trying out this design device back in 1942, but it seems a bit coincidental that unlike the title lettering on this "trial" cover, this lettering isn't hand-drawn, but seems to have been typeset.
Looking at the backs of the modern French-language editions, the only one where the font for
Les aventures de Tintin matches this one (non-bold Gill sans caps, widely spaced) is ç, set on the blue sky rather than on a strip. This is also a 1940s book, of course, but a later one – the next in the series. (Mind you, I'm only looking at the modern French covers; I don't know whether any others of the original 1940s books had this line typeset like that, or none.)
If this is a genuine trial cover, maybe Hergé was trying out this font and styling a book earlier than he ended up using it for real, and trying out the strip idea sixteen years earlier than he use that for real. But if this is a fake, I'd guess that this line of text has simply been lifted from a copy of
Les aventures de Tintin and put on this anachronistic strip.
Also, the style of hand-lettering of Casterman at the bottom looks a bit more modern than 1942, with it's curvy strokes on the As, M and N.
I could be wrong, but that's how it looks and feels to me. I'm happy to be corrected, though, if someone recognises it as a genuine Hergé trial cover. If it is, it's very interesting!
Without knowing the source of your images, derdup, it's hard to speculate accurately what they might be.