A model marked 29 could have been shipped in a mahogany case most likely with a "clamshell" interior (Styrofoam top and bottom molded in the shape of the revolver and accessories) if it was shipped in early 1960 or later. If it was shipped in late 1958, it would have been shipped in a blue presentation case with the cloth interior. There is also a third, but remote, possibility,namely, a few Model 29s were shipped in a mahogany case with the cloth interior that was used to line the blue presenation cases. I have only seen a couple of these cases and they date to 1959.
If you know the shipping date of the Model 29, I can tell you which case is most likely correct for it.
Smooth stocks would have been special ordered and are most likely replacements for the original checked stocks.
Bill