Ignition wrench set

Here's an interesting set of little ignition wrenches, about 3 1/2 inches long.  They aren't identified by size, but only by the maker of the magneto or ignition system manufacturer. Originally they would  be held together with a bolt and thumbscrew through the center hole. No markings on the backs but thanks to reader "Ski" for identifying the manufacturer as Indestro. 1935 catalog page from 1935 below.

Thanks, Inno!