The lack of surface texture and other details on the walls, like arches or lintels over windows and doors, make me think this one may a scratchbuilt structure. Even the wash used to vary the surface color does not bring out any surface detail.
It is a unique-looking structure, but you may not find a kit for this one.
Good idea,morbius. If I look closely at the pictures, there appears to be relatively fancy cornice or trim piece at the top of the building. We can only see the back of it, but it looks a bit fancier than most of us can whip up from scratch.
But there are just too many suppliers of MDF kits. I spent ~1.5hr browsing them and was unable to locate this building. Lots of others, though.
I am afraid that the signage may bear no resemblance to the actual kit that was used for the structure.
Look closely at the alignment of the letters in JEWELRY. The letters are not centered in the vertical space as a professional sign would be. A kit sign that was modeling a real sign would be centered, too, not left-justified. If you look across the street, the same thing applies to the KIMBLES building. The printing is left-justified and there is no apostrophe in KIMBLE'S which a real sign painter would not omit. Justification issues show up when wide letters and skinny letters are present in the same block of text, especially vertically oriented print.
The visible portion of the facade also shows a lot of brickwork detail. This is not evident on the rear and side walls visible on building 14. This inconsistency would not be done for a commercially produced kit where the mfr has no way to know which way the model may be oriented or viewed. The front side also appears to have a step up to the entry door, which is more like an apartment building than a US commercial establishment.
Examples of text justification. Note the J's, E's, and I's compared to the K's, M's, and W's.
This may be a case where you just have to relax and find something close. Plan B is to kitbash it.
I am working on a few new buildings for my layout and am in the process of making signage for a building to be in a very similar style to those used in the book.
It will be a store, the Electro Importing Company, which existed in the correct era, and would have been a handy source of repair parts after the Martian Invasion
I am using a kit very similar to this one:
With the following sign:
I'll need to trim away the air conditioning unit and make a few other small alterations. Not to forget also changing the contents of the windows to include some correct period publications, posters and other bits and pieces.